diff --git a/.gitignore b/.gitignore
index 875a461..cd4a9ff 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,5 +1,6 @@
 .env
 *.bin
+*.bin.zstd
 *.bin.gz
 /Cargo.lock
 gh-pages/
diff --git a/Cargo.toml b/Cargo.toml
index 32738e7..3ea46e6 100755
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -15,20 +15,22 @@ exclude = [
 
 [dependencies]
 failure = "0.1.5"
-flate2 = { version = "1.0.7", features = ["rust_backend"], default_features = false }
 lazy_static = "1.3.0"
 log = "0.4.6"
-regex = "1.1.2"
+regex = "1.1.7"
 rmp-serde = "0.13.7"
-serde = "1.0.89"
-serde_derive = "1.0.89"
+serde = { version = "1.0.92", features = ["derive"] }
 unicode-normalization = "0.1.8"
 
 # spdx deps
 serde_json = { version = "1.0.39", optional = true }
 
 [target.'cfg(not(target_arch = "wasm32"))'.dependencies]
-rayon = "1.0.3"
+rayon = "1.1.0"
+zstd = "0.4.24+zstd.1.4.0"
+
+[target.'cfg(target_arch = "wasm32")'.dependencies]
+zstd = { version = "0.4.24+zstd.1.4.0", default-features = false, features = ["wasm"] }
 
 [dev-dependencies]
 env_logger = "0.6.1"
diff --git a/cli/Cargo.lock b/cli/Cargo.lock
index e2c0289..9eff0c9 100644
--- a/cli/Cargo.lock
+++ b/cli/Cargo.lock
@@ -1,3 +1,5 @@
+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
 [[package]]
 name = "adler32"
 version = "1.0.3"
@@ -32,16 +34,17 @@ name = "askalono"
 version = "0.3.0"
 dependencies = [
  "failure 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)",
- "flate2 1.0.7 (registry+https://github.com/rust-lang/crates.io-index)",
+ "flate2 1.0.9 (registry+https://github.com/rust-lang/crates.io-index)",
  "lazy_static 1.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.4.6 (registry+https://github.com/rust-lang/crates.io-index)",
- "rayon 1.0.3 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rayon 1.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "regex 1.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "rmp-serde 0.13.7 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde 1.0.89 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde_derive 1.0.89 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde_json 1.0.39 (registry+https://github.com/rust-lang/crates.io-index)",
  "unicode-normalization 0.1.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "zstd 0.4.24+zstd.1.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -55,7 +58,7 @@ dependencies = [
  "failure 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)",
  "ignore 0.4.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.4.6 (registry+https://github.com/rust-lang/crates.io-index)",
- "rayon 1.0.3 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rayon 1.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde 1.0.89 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde_derive 1.0.89 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde_json 1.0.39 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -118,6 +121,9 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 name = "cc"
 version = "1.0.28"
 source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "rayon 1.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
+]
 
 [[package]]
 name = "cfg-if"
@@ -156,7 +162,7 @@ dependencies = [
 
 [[package]]
 name = "crc32fast"
-version = "1.1.2"
+version = "1.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "cfg-if 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -168,7 +174,7 @@ version = "0.3.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "crossbeam-epoch 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "crossbeam-utils 0.6.3 (registry+https://github.com/rust-lang/crates.io-index)",
+ "crossbeam-utils 0.6.5 (registry+https://github.com/rust-lang/crates.io-index)",
  "parking_lot 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "rand 0.6.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "smallvec 0.6.7 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -176,25 +182,11 @@ dependencies = [
 
 [[package]]
 name = "crossbeam-deque"
-version = "0.2.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "crossbeam-epoch 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "crossbeam-utils 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
-[[package]]
-name = "crossbeam-epoch"
-version = "0.3.1"
+version = "0.6.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "arrayvec 0.4.10 (registry+https://github.com/rust-lang/crates.io-index)",
- "cfg-if 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)",
- "crossbeam-utils 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "lazy_static 1.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "memoffset 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "nodrop 0.1.13 (registry+https://github.com/rust-lang/crates.io-index)",
- "scopeguard 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)",
+ "crossbeam-epoch 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "crossbeam-utils 0.6.5 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -204,26 +196,27 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "arrayvec 0.4.10 (registry+https://github.com/rust-lang/crates.io-index)",
  "cfg-if 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)",
- "crossbeam-utils 0.6.3 (registry+https://github.com/rust-lang/crates.io-index)",
+ "crossbeam-utils 0.6.5 (registry+https://github.com/rust-lang/crates.io-index)",
  "lazy_static 1.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "memoffset 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "scopeguard 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
-name = "crossbeam-utils"
-version = "0.2.2"
+name = "crossbeam-queue"
+version = "0.1.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "cfg-if 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "crossbeam-utils 0.6.5 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
 name = "crossbeam-utils"
-version = "0.6.3"
+version = "0.6.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "cfg-if 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "lazy_static 1.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -270,12 +263,12 @@ dependencies = [
 
 [[package]]
 name = "flate2"
-version = "1.0.7"
+version = "1.0.9"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "crc32fast 1.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "crc32fast 1.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "libc 0.2.45 (registry+https://github.com/rust-lang/crates.io-index)",
- "miniz_oxide_c_api 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "miniz_oxide_c_api 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -297,6 +290,11 @@ name = "fuchsia-zircon-sys"
 version = "0.3.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
+[[package]]
+name = "glob"
+version = "0.2.11"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
 [[package]]
 name = "globset"
 version = "0.4.2"
@@ -391,7 +389,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
 name = "miniz_oxide"
-version = "0.2.0"
+version = "0.2.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "adler32 1.0.3 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -399,13 +397,13 @@ dependencies = [
 
 [[package]]
 name = "miniz_oxide_c_api"
-version = "0.2.0"
+version = "0.2.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "cc 1.0.28 (registry+https://github.com/rust-lang/crates.io-index)",
  "crc 1.8.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "libc 0.2.45 (registry+https://github.com/rust-lang/crates.io-index)",
- "miniz_oxide 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "miniz_oxide 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -551,22 +549,23 @@ dependencies = [
 
 [[package]]
 name = "rayon"
-version = "1.0.3"
+version = "1.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "crossbeam-deque 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "crossbeam-deque 0.6.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "either 1.5.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "rayon-core 1.4.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rayon-core 1.5.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
 name = "rayon-core"
-version = "1.4.1"
+version = "1.5.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "crossbeam-deque 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "crossbeam-deque 0.6.3 (registry+https://github.com/rust-lang/crates.io-index)",
+ "crossbeam-queue 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "crossbeam-utils 0.6.5 (registry+https://github.com/rust-lang/crates.io-index)",
  "lazy_static 1.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.45 (registry+https://github.com/rust-lang/crates.io-index)",
  "num_cpus 1.9.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -886,6 +885,33 @@ dependencies = [
  "winapi-util 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
+name = "zstd"
+version = "0.4.24+zstd.1.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "zstd-safe 1.4.9+zstd.1.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "zstd-safe"
+version = "1.4.9+zstd.1.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "libc 0.2.45 (registry+https://github.com/rust-lang/crates.io-index)",
+ "zstd-sys 1.4.10+zstd.1.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "zstd-sys"
+version = "1.4.10+zstd.1.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "cc 1.0.28 (registry+https://github.com/rust-lang/crates.io-index)",
+ "glob 0.2.11 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.45 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [metadata]
 "checksum adler32 1.0.3 (registry+https://github.com/rust-lang/crates.io-index)" = "7e522997b529f05601e05166c07ed17789691f562762c7f3b987263d2dedee5c"
 "checksum aho-corasick 0.6.9 (registry+https://github.com/rust-lang/crates.io-index)" = "1e9a933f4e58658d7b12defcf96dc5c720f20832deebe3e0a19efd3b6aaeeb9e"
@@ -903,22 +929,22 @@ dependencies = [
 "checksum clap 2.32.0 (registry+https://github.com/rust-lang/crates.io-index)" = "b957d88f4b6a63b9d70d5f454ac8011819c6efa7727858f458ab71c756ce2d3e"
 "checksum cloudabi 0.0.3 (registry+https://github.com/rust-lang/crates.io-index)" = "ddfc5b9aa5d4507acaf872de71051dfd0e309860e88966e1051e462a077aac4f"
 "checksum crc 1.8.1 (registry+https://github.com/rust-lang/crates.io-index)" = "d663548de7f5cca343f1e0a48d14dcfb0e9eb4e079ec58883b7251539fa10aeb"
-"checksum crc32fast 1.1.2 (registry+https://github.com/rust-lang/crates.io-index)" = "e91d5240c6975ef33aeb5f148f35275c25eda8e8a5f95abe421978b05b8bf192"
+"checksum crc32fast 1.2.0 (registry+https://github.com/rust-lang/crates.io-index)" = "ba125de2af0df55319f41944744ad91c71113bf74a4646efff39afe1f6842db1"
 "checksum crossbeam-channel 0.3.4 (registry+https://github.com/rust-lang/crates.io-index)" = "5b2a9ea8f77c7f9efd317a8a5645f515d903a2d86ee14d2337a5facd1bd52c12"
-"checksum crossbeam-deque 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)" = "f739f8c5363aca78cfb059edf753d8f0d36908c348f3d8d1503f03d8b75d9cf3"
-"checksum crossbeam-epoch 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)" = "927121f5407de9956180ff5e936fe3cf4324279280001cd56b669d28ee7e9150"
+"checksum crossbeam-deque 0.6.3 (registry+https://github.com/rust-lang/crates.io-index)" = "05e44b8cf3e1a625844d1750e1f7820da46044ff6d28f4d43e455ba3e5bb2c13"
 "checksum crossbeam-epoch 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)" = "f10a4f8f409aaac4b16a5474fb233624238fcdeefb9ba50d5ea059aab63ba31c"
-"checksum crossbeam-utils 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)" = "2760899e32a1d58d5abb31129f8fae5de75220bc2176e77ff7c627ae45c918d9"
-"checksum crossbeam-utils 0.6.3 (registry+https://github.com/rust-lang/crates.io-index)" = "41ee4864f4797060e52044376f7d107429ce1fb43460021b126424b7180ee21a"
+"checksum crossbeam-queue 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)" = "7c979cd6cfe72335896575c6b5688da489e420d36a27a0b9eb0c73db574b4a4b"
+"checksum crossbeam-utils 0.6.5 (registry+https://github.com/rust-lang/crates.io-index)" = "f8306fcef4a7b563b76b7dd949ca48f52bc1141aa067d2ea09565f3e2652aa5c"
 "checksum difference 2.0.0 (registry+https://github.com/rust-lang/crates.io-index)" = "524cbf6897b527295dff137cec09ecf3a05f4fddffd7dfcd1585403449e74198"
 "checksum either 1.5.0 (registry+https://github.com/rust-lang/crates.io-index)" = "3be565ca5c557d7f59e7cfcf1844f9e3033650c929c6566f511e8005f205c1d0"
 "checksum env_logger 0.6.1 (registry+https://github.com/rust-lang/crates.io-index)" = "b61fa891024a945da30a9581546e8cfaf5602c7b3f4c137a2805cf388f92075a"
 "checksum failure 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)" = "795bd83d3abeb9220f257e597aa0080a508b27533824adf336529648f6abf7e2"
 "checksum failure_derive 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)" = "ea1063915fd7ef4309e222a5a07cf9c319fb9c7836b1f89b85458672dbb127e1"
-"checksum flate2 1.0.7 (registry+https://github.com/rust-lang/crates.io-index)" = "f87e68aa82b2de08a6e037f1385455759df6e445a8df5e005b4297191dbf18aa"
+"checksum flate2 1.0.9 (registry+https://github.com/rust-lang/crates.io-index)" = "550934ad4808d5d39365e5d61727309bf18b3b02c6c56b729cb92e7dd84bc3d8"
 "checksum fnv 1.0.6 (registry+https://github.com/rust-lang/crates.io-index)" = "2fad85553e09a6f881f739c29f0b00b0f01357c743266d478b68951ce23285f3"
 "checksum fuchsia-zircon 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)" = "2e9763c69ebaae630ba35f74888db465e49e259ba1bc0eda7d06f4a067615d82"
 "checksum fuchsia-zircon-sys 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)" = "3dcaa9ae7725d12cdb85b3ad99a434db70b468c09ded17e012d86b5c1010f7a7"
+"checksum glob 0.2.11 (registry+https://github.com/rust-lang/crates.io-index)" = "8be18de09a56b60ed0edf84bc9df007e30040691af7acd1c41874faac5895bfb"
 "checksum globset 0.4.2 (registry+https://github.com/rust-lang/crates.io-index)" = "4743617a7464bbda3c8aec8558ff2f9429047e025771037df561d383337ff865"
 "checksum heck 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)" = "20564e78d53d2bb135c343b3f47714a56af2061f1c928fdb541dc7b9fdd94205"
 "checksum humantime 1.2.0 (registry+https://github.com/rust-lang/crates.io-index)" = "3ca7e5f2e110db35f93b837c81797f3714500b81d517bf20c431b16d3ca4f114"
@@ -930,8 +956,8 @@ dependencies = [
 "checksum log 0.4.6 (registry+https://github.com/rust-lang/crates.io-index)" = "c84ec4b527950aa83a329754b01dbe3f58361d1c5efacd1f6d68c494d08a17c6"
 "checksum memchr 2.1.2 (registry+https://github.com/rust-lang/crates.io-index)" = "db4c41318937f6e76648f42826b1d9ade5c09cafb5aef7e351240a70f39206e9"
 "checksum memoffset 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)" = "0f9dc261e2b62d7a622bf416ea3c5245cdd5d9a7fcc428c0d06804dfce1775b3"
-"checksum miniz_oxide 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)" = "5ad30a47319c16cde58d0314f5d98202a80c9083b5f61178457403dfb14e509c"
-"checksum miniz_oxide_c_api 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)" = "28edaef377517fd9fe3e085c37d892ce7acd1fbeab9239c5a36eec352d8a8b7e"
+"checksum miniz_oxide 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)" = "c468f2369f07d651a5d0bb2c9079f8488a66d5466efe42d0c5c6466edcb7f71e"
+"checksum miniz_oxide_c_api 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)" = "b7fe927a42e3807ef71defb191dc87d4e24479b221e67015fe38ae2b7b447bab"
 "checksum nodrop 0.1.13 (registry+https://github.com/rust-lang/crates.io-index)" = "2f9667ddcc6cc8a43afc9b7917599d7216aa09c463919ea32c59ed6cac8bc945"
 "checksum num-traits 0.1.43 (registry+https://github.com/rust-lang/crates.io-index)" = "92e5113e9fd4cc14ded8e499429f396a20f98c772a47cc8622a736e1ec843c31"
 "checksum num-traits 0.2.6 (registry+https://github.com/rust-lang/crates.io-index)" = "0b3a5d7cc97d6d30d8b9bc8fa19bf45349ffe46241e8816f50f62f6d6aaabee1"
@@ -949,8 +975,8 @@ dependencies = [
 "checksum rand_isaac 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)" = "ded997c9d5f13925be2a6fd7e66bf1872597f759fd9dd93513dd7e92e5a5ee08"
 "checksum rand_pcg 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)" = "086bd09a33c7044e56bb44d5bdde5a60e7f119a9e95b0775f545de759a32fe05"
 "checksum rand_xorshift 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)" = "effa3fcaa47e18db002bdde6060944b6d2f9cfd8db471c30e873448ad9187be3"
-"checksum rayon 1.0.3 (registry+https://github.com/rust-lang/crates.io-index)" = "373814f27745b2686b350dd261bfd24576a6fb0e2c5919b3a2b6005f820b0473"
-"checksum rayon-core 1.4.1 (registry+https://github.com/rust-lang/crates.io-index)" = "b055d1e92aba6877574d8fe604a63c8b5df60f60e5982bf7ccbb1338ea527356"
+"checksum rayon 1.1.0 (registry+https://github.com/rust-lang/crates.io-index)" = "a4b0186e22767d5b9738a05eab7c6ac90b15db17e5b5f9bd87976dd7d89a10a4"
+"checksum rayon-core 1.5.0 (registry+https://github.com/rust-lang/crates.io-index)" = "ebbe0df8435ac0c397d467b6cad6d25543d06e8a019ef3f6af3c384597515bd2"
 "checksum redox_syscall 0.1.45 (registry+https://github.com/rust-lang/crates.io-index)" = "7b7aac97a11cf928b13c97f726b1bfe8542969fcbc39007ce566a888da5964a3"
 "checksum redox_termios 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)" = "7e891cfe48e9100a70a3b6eb652fef28920c117d366339687bd5576160db0f76"
 "checksum regex 1.1.2 (registry+https://github.com/rust-lang/crates.io-index)" = "53ee8cfdddb2e0291adfb9f13d31d3bbe0a03c9a402c01b1e24188d86c35b24f"
@@ -994,3 +1020,6 @@ dependencies = [
 "checksum winapi-util 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)" = "afc5508759c5bf4285e61feb862b6083c8480aec864fa17a81fdec6f69b461ab"
 "checksum winapi-x86_64-pc-windows-gnu 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)" = "712e227841d057c1ee1cd2fb22fa7e5a5461ae8e48fa2ca79ec42cfc1931183f"
 "checksum wincolor 1.0.1 (registry+https://github.com/rust-lang/crates.io-index)" = "561ed901ae465d6185fa7864d63fbd5720d0ef718366c9a4dc83cf6170d7e9ba"
+"checksum zstd 0.4.24+zstd.1.4.0 (registry+https://github.com/rust-lang/crates.io-index)" = "2c5a6414958b49ee80f2dd0042023ac8f37cfe1d31fbeec0b9749cf6f2c03683"
+"checksum zstd-safe 1.4.9+zstd.1.4.0 (registry+https://github.com/rust-lang/crates.io-index)" = "1d98332212af687878b146a6549c188e9b72971972d23089c831472f938e6272"
+"checksum zstd-sys 1.4.10+zstd.1.4.0 (registry+https://github.com/rust-lang/crates.io-index)" = "46f433134fbd0c37c9eb5929733df5f34bcdff464722eb93155fcee93eb57652"
diff --git a/cli/Cargo.toml b/cli/Cargo.toml
index 700c6fc..e987fc8 100644
--- a/cli/Cargo.toml
+++ b/cli/Cargo.toml
@@ -11,7 +11,7 @@ include = [
     "/src/**/*",
     "/build.rs",
     "/Cargo.*",
-    "/embedded-cache.bin.gz",
+    "/embedded-cache.bin.zstd",
 ]
 
 [dependencies]
diff --git a/cli/build.rs b/cli/build.rs
index 5a00830..395f6a4 100644
--- a/cli/build.rs
+++ b/cli/build.rs
@@ -7,7 +7,7 @@ use std::path::Path;
 
 use askalono::Store;
 
-const EMBEDDED_CACHE: &str = "embedded-cache.bin.gz";
+const EMBEDDED_CACHE: &str = "embedded-cache.bin.zstd";
 
 fn main() {
     if env::var("CARGO_FEATURE_EMBEDDED_CACHE").is_err() {
diff --git a/cli/src/formats.rs b/cli/src/formats.rs
index 0514e9c..eea3d98 100644
--- a/cli/src/formats.rs
+++ b/cli/src/formats.rs
@@ -98,7 +98,6 @@ impl<'a> FileResult<'a> {
     }
 
     fn as_json(&self) -> String {
-        use serde_json;
         serde_json::to_string(self).expect("must produce valid json output")
     }
 }
diff --git a/cli/src/identify.rs b/cli/src/identify.rs
index f5d3768..5517b83 100644
--- a/cli/src/identify.rs
+++ b/cli/src/identify.rs
@@ -114,7 +114,7 @@ pub fn identify_data(
                 score: cr.score,
                 license: CLIIdentifiedLicense {
                     aliases: store.aliases(&cr.license.name).unwrap().clone(),
-                    name: cr.license.name.clone(),
+                    name: cr.license.name.to_owned(),
                     kind: cr.license.kind,
                 },
                 line_range: cr.line_range,
@@ -126,7 +126,7 @@ pub fn identify_data(
     if let Some(license) = result.license {
         output.license = Some(CLIIdentifiedLicense {
             aliases: store.aliases(&license.name).unwrap().clone(),
-            name: license.name,
+            name: license.name.to_owned(),
             kind: license.kind,
         });
 
@@ -138,7 +138,7 @@ pub fn identify_data(
     }
 
     // not a good enough match overall, but maybe inside
-    if output.containing.len() > 0 {
+    if !output.containing.is_empty() {
         if want_diff {
             diff_result(&text_data, &result.containing[0].license.data);
         }
diff --git a/cli/src/main.rs b/cli/src/main.rs
index 03af748..acc8e83 100755
--- a/cli/src/main.rs
+++ b/cli/src/main.rs
@@ -26,7 +26,7 @@ fn main() {
 
     let cache_file: PathBuf = options
         .cache
-        .unwrap_or_else(|| "./askalono-cache.bin.gz".into());
+        .unwrap_or_else(|| "./askalono-cache.bin.zstd".into());
 
     let output_format = options.format.unwrap_or(OutputFormat::text);
 
diff --git a/examples/annotate-text.rs b/examples/annotate-text.rs
index 795b4f9..d466abb 100644
--- a/examples/annotate-text.rs
+++ b/examples/annotate-text.rs
@@ -14,7 +14,7 @@ enum Annotation {
 fn main() {
     let args: Vec<_> = std::env::args().collect();
     if args.len() != 2 {
-        eprintln!("usage: annotate-text cache.bin.gz < input.txt > output.html");
+        eprintln!("usage: annotate-text cache.bin.zstd < input.txt > output.html");
         std::process::exit(1);
     }
 
@@ -37,7 +37,7 @@ fn main() {
     for result in &results.containing {
         annotations.insert(
             result.line_range.0,
-            Annotation::Begin(result.license.name.clone()),
+            Annotation::Begin(result.license.name.to_owned()),
         );
         annotations.insert(result.line_range.1, Annotation::End);
     }
diff --git a/src/license.rs b/src/license.rs
index 4236747..4c7ff84 100644
--- a/src/license.rs
+++ b/src/license.rs
@@ -3,7 +3,7 @@
 
 use std::{collections::HashMap, fmt};
 
-use serde_derive::{Deserialize, Serialize};
+use serde::{Deserialize, Serialize};
 
 use crate::{
     ngram::NgramSet,
diff --git a/src/ngram.rs b/src/ngram.rs
index 6cfbe54..185c79e 100644
--- a/src/ngram.rs
+++ b/src/ngram.rs
@@ -6,7 +6,7 @@ use std::{
     collections::{hash_map::Iter, HashMap, VecDeque},
 };
 
-use serde_derive::{Deserialize, Serialize};
+use serde::{Deserialize, Serialize};
 
 #[derive(PartialEq, Clone, Debug, Serialize, Deserialize)]
 pub struct NgramSet {
diff --git a/src/preproc.rs b/src/preproc.rs
index bd43eb3..057d09c 100644
--- a/src/preproc.rs
+++ b/src/preproc.rs
@@ -109,6 +109,7 @@ fn trim_line(input: &str) -> String {
 
 // Aggressive preprocessors
 
+#[allow(dead_code)]
 fn lcs_substr(fstr: &str, sstr: &str) -> Option<String> {
     let mut f_chars = fstr.chars();
     let mut s_chars = sstr.chars();
@@ -161,6 +162,7 @@ fn lcs_substr(fstr: &str, sstr: &str) -> Option<String> {
     }
 }
 
+#[allow(dead_code)]
 fn remove_common_tokens(text: &str) -> String {
     let lines: Vec<&str> = text.split('\n').collect();
     let mut largest_substr = String::new();
diff --git a/src/store/analyze.rs b/src/store/analyze.rs
index d2362ab..fbf11a4 100644
--- a/src/store/analyze.rs
+++ b/src/store/analyze.rs
@@ -3,7 +3,11 @@
 
 use std::{cmp::Ordering, fmt};
 
-use crate::{license::LicenseType, license::TextData, store::base::Store};
+use crate::{
+    license::LicenseType,
+    license::TextData,
+    store::base::{LicenseEntry, Store},
+};
 
 /// Information about text that was compared against licenses in the store.
 ///
@@ -17,7 +21,7 @@ pub struct Match<'a> {
     pub score: f32,
     /// The name of the closest matching license in the `Store`. This will
     /// always be something that exists in the store, regardless of the score.
-    pub name: String,
+    pub name: &'a str,
     /// The type of the license that matched. Useful to know if the match was
     /// the complete text, a header, or something else.
     pub license_type: LicenseType,
@@ -59,46 +63,41 @@ impl<'a> fmt::Debug for Match<'a> {
     }
 }
 
-// this could probably be a stand-alone closure, but I was hitting lifetime
-// hell, so a macro it is. feel free to attempt it yourself.
-macro_rules! analyze_fold_closure {
-    ($text:ident) => {
-        |mut acc: Vec<PartialMatch<'_>>, (name, data)| {
-            acc.push(PartialMatch {
-                score: data.original.match_score($text),
-                name,
-                license_type: LicenseType::Original,
-                data: &data.original,
-            });
-            data.alternates.iter().for_each(|alt| {
-                acc.push(PartialMatch {
-                    score: alt.match_score($text),
-                    name,
-                    license_type: LicenseType::Alternate,
-                    data: alt,
-                })
-            });
-            data.headers.iter().for_each(|head| {
-                acc.push(PartialMatch {
-                    score: head.match_score($text),
-                    name,
-                    license_type: LicenseType::Header,
-                    data: head,
-                })
-            });
-            acc
-        }
-    };
-}
-
 impl Store {
     /// Compare the given `TextData` against all licenses in the `Store`.
     ///
     /// This parallelizes the search as much as it can to find the best match.
     /// Once a match is obtained, it can be optimized further; see methods on
     /// `TextData` for more information.
-    pub fn analyze(&self, text: &TextData) -> Match<'_> {
-        let mut res: Vec<PartialMatch<'_>>;
+    pub fn analyze<'a>(&'a self, text: &TextData) -> Match<'a> {
+        let mut res: Vec<PartialMatch<'a>>;
+
+        let analyze_fold =
+            |mut acc: Vec<PartialMatch<'a>>, (name, data): (&'a String, &'a LicenseEntry)| {
+                acc.push(PartialMatch {
+                    score: data.original.match_score(text),
+                    name,
+                    license_type: LicenseType::Original,
+                    data: &data.original,
+                });
+                data.alternates.iter().for_each(|alt| {
+                    acc.push(PartialMatch {
+                        score: alt.match_score(text),
+                        name,
+                        license_type: LicenseType::Alternate,
+                        data: alt,
+                    })
+                });
+                data.headers.iter().for_each(|head| {
+                    acc.push(PartialMatch {
+                        score: head.match_score(text),
+                        name,
+                        license_type: LicenseType::Header,
+                        data: head,
+                    })
+                });
+                acc
+            };
 
         // parallel analysis
         #[cfg(not(target_arch = "wasm32"))]
@@ -107,10 +106,10 @@ impl Store {
             res = self
                 .licenses
                 .par_iter()
-                .fold(Vec::new, analyze_fold_closure!(text))
+                .fold(Vec::new, analyze_fold)
                 .reduce(
                     Vec::new,
-                    |mut a: Vec<PartialMatch<'_>>, b: Vec<PartialMatch<'_>>| {
+                    |mut a: Vec<PartialMatch<'a>>, b: Vec<PartialMatch<'a>>| {
                         a.extend(b);
                         a
                     },
@@ -125,17 +124,15 @@ impl Store {
                 .licenses
                 .iter()
                 // len of licenses isn't strictly correct, but it'll do
-                .fold(
-                    Vec::with_capacity(self.licenses.len()),
-                    analyze_fold_closure!(text),
-                );
+                .fold(Vec::with_capacity(self.licenses.len()), analyze_fold);
             res.sort_unstable_by(|a, b| b.partial_cmp(a).unwrap());
         }
 
         let m = &res[0];
+
         Match {
             score: m.score,
-            name: m.name.to_string(),
+            name: m.name,
             license_type: m.license_type,
             data: m.data,
         }
diff --git a/src/store/base.rs b/src/store/base.rs
index cc8ae92..5a3966b 100644
--- a/src/store/base.rs
+++ b/src/store/base.rs
@@ -4,7 +4,7 @@
 use std::collections::HashMap;
 
 use failure::{format_err, Error};
-use serde_derive::{Deserialize, Serialize};
+use serde::{Deserialize, Serialize};
 
 use crate::{license::LicenseType, license::TextData};
 
@@ -31,7 +31,7 @@ pub(crate) struct LicenseEntry {
 /// use askalono::{Store, TextData};
 ///
 /// # fn main() -> Result<(), Box<Error>> {
-/// let store = Store::from_cache(File::open("askalono-cache.bin.gz")?)?;
+/// let store = Store::from_cache(File::open("askalono-cache.bin.zstd")?)?;
 /// let result = store.analyze(&TextData::from("what's this"));
 /// # Ok(())
 /// # }
diff --git a/src/store/cache.rs b/src/store/cache.rs
index 935aabc..5a15318 100644
--- a/src/store/cache.rs
+++ b/src/store/cache.rs
@@ -3,15 +3,14 @@
 
 use std::{io::copy, io::prelude::*};
 
-use failure::{bail, format_err, Error};
-use flate2::{read::GzDecoder, Compression, GzBuilder};
+use failure::Error;
 use log::info;
 use rmp_serde::Serializer;
 use serde::Serialize;
 
 use crate::store::base::Store;
 
-const CACHE_VERSION: &[u8] = b"askalono-03";
+const CACHE_VERSION: &[u8] = b"askalono-04";
 
 impl Store {
     /// Create a store from a cache file.
@@ -21,48 +20,45 @@ impl Store {
     /// the full SPDX set from disk in 200-300 ms. The cache will be
     /// sanity-checked to ensure it was generated with a similar version of
     /// askalono.
-    pub fn from_cache<R>(readable: R) -> Result<Store, Error>
+    pub fn from_cache<R>(mut readable: R) -> Result<Store, Error>
     where
         R: Read + Sized,
     {
-        use rmp_serde::decode::from_read;
+        let mut header = [0u8; 11];
+        readable.read_exact(&mut header)?;
 
-        let dec = GzDecoder::new(readable);
-        {
-            let extra = dec
-                .header()
-                .ok_or_else(|| format_err!("cache gzip header invalid"))?
-                .extra()
-                .ok_or_else(|| format_err!("cache gzip extra header missing"))?;
-            if extra != CACHE_VERSION {
-                bail!("cache version mismatch");
-            }
+        if header != CACHE_VERSION {
+            failure::bail!("cache version mismatch");
         }
 
-        let store = from_read(dec)?;
+        let dec = zstd::Decoder::new(readable)?;
+        let store = rmp_serde::decode::from_read(dec)?;
         Ok(store)
     }
 
     /// Serialize the current store.
     ///
-    /// The output will be a MessagePack'd gzip'd binary stream that should be
+    /// The output will be a MessagePack'd gzip'd or zstd'd binary stream that should be
     /// written to disk.
     pub fn to_cache<W>(&self, mut writable: W) -> Result<(), Error>
     where
         W: Write + Sized,
     {
-        let mut buf = Vec::new();
-        {
+        let buf = {
+            // This currently sits around 3.7MiB, so go up to 4 to fit comfortably
+            let mut buf = Vec::with_capacity(4 * 1024 * 1024);
             let mut serializer = Serializer::new(&mut buf);
             self.serialize(&mut serializer)?;
-        }
+            buf
+        };
 
         info!("Pre-compressed output is {} bytes", buf.len());
 
-        let mut gz = GzBuilder::new()
-            .extra(CACHE_VERSION)
-            .write(&mut writable, Compression::best());
-        copy(&mut buf.as_slice(), &mut gz)?;
+        writable.write_all(CACHE_VERSION)?;
+        let mut zenc = zstd::Encoder::new(writable, 21)?;
+
+        copy(&mut buf.as_slice(), &mut zenc)?;
+        zenc.finish()?;
 
         Ok(())
     }
diff --git a/src/strategy.rs b/src/strategy.rs
index 8c8e49b..d42328e 100644
--- a/src/strategy.rs
+++ b/src/strategy.rs
@@ -6,7 +6,7 @@ use std::fmt;
 
 use failure::Error;
 use log::{info, trace};
-use serde_derive::Serialize;
+use serde::Serialize;
 
 use crate::{
     license::{LicenseType, TextData},
@@ -17,7 +17,7 @@ use crate::{
 #[derive(Serialize, Clone)]
 pub struct IdentifiedLicense<'a> {
     /// The identifier of the license.
-    pub name: String,
+    pub name: &'a str,
     /// The type of the license that was matched.
     pub kind: LicenseType,
     /// A reference to the license data inside the store.
@@ -213,7 +213,7 @@ impl<'a> ScanStrategy<'a> {
         // meets confidence threshold? record that
         if analysis.score > self.confidence_threshold {
             license = Some(IdentifiedLicense {
-                name: analysis.name.clone(),
+                name: analysis.name,
                 kind: analysis.license_type,
                 data: analysis.data,
             });
diff --git a/tests/common/mod.rs b/tests/common/mod.rs
index 416eaba..e6a63c3 100644
--- a/tests/common/mod.rs
+++ b/tests/common/mod.rs
@@ -9,7 +9,7 @@ use askalono::Store;
 #[allow(dead_code)]
 pub const SPDX_TEXT: &str = concat!(env!("CARGO_MANIFEST_DIR"), "/datasets/spdx-text");
 pub const SPDX_JSON: &str = concat!(env!("CARGO_MANIFEST_DIR"), "/datasets/spdx-json");
-pub const TEST_CACHE: &str = concat!(env!("CARGO_MANIFEST_DIR"), "/tests/test-cache.bin.gz");
+pub const TEST_CACHE: &str = concat!(env!("CARGO_MANIFEST_DIR"), "/tests/test-cache.bin.zstd");
 
 pub fn load_store() -> Store {
     if Path::new(TEST_CACHE).exists() {
diff --git a/tests/introspection.rs b/tests/introspection.rs
index b7a17c8..9cb336b 100644
--- a/tests/introspection.rs
+++ b/tests/introspection.rs
@@ -34,7 +34,7 @@ fn self_apache_header() {
     let matched = store.analyze(&text_data);
 
     // check that it looked apache-2.0-ish
-    assert_eq!("Apache-2.0", &matched.name);
+    assert_eq!("Apache-2.0", matched.name);
     assert_eq!(askalono::LicenseType::Header, matched.license_type);
 
     // now try to find the bounds of the license header
diff --git a/wasm/pkg/Cargo.lock b/wasm/pkg/Cargo.lock
index bdce422..e6f937e 100644
--- a/wasm/pkg/Cargo.lock
+++ b/wasm/pkg/Cargo.lock
@@ -1,16 +1,11 @@
 # This file is automatically @generated by Cargo.
 # It is not intended for manual editing.
-[[package]]
-name = "adler32"
-version = "1.0.3"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-
 [[package]]
 name = "aho-corasick"
-version = "0.6.9"
+version = "0.7.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "memchr 2.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "memchr 2.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -26,16 +21,15 @@ name = "askalono"
 version = "0.3.0"
 dependencies = [
  "failure 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)",
- "flate2 1.0.7 (registry+https://github.com/rust-lang/crates.io-index)",
  "lazy_static 1.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.4.6 (registry+https://github.com/rust-lang/crates.io-index)",
- "rayon 1.0.3 (registry+https://github.com/rust-lang/crates.io-index)",
- "regex 1.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rayon 1.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "regex 1.1.7 (registry+https://github.com/rust-lang/crates.io-index)",
  "rmp-serde 0.13.7 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde 1.0.89 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde_derive 1.0.89 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde 1.0.94 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde_json 1.0.39 (registry+https://github.com/rust-lang/crates.io-index)",
  "unicode-normalization 0.1.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "zstd 0.4.24+zstd.1.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -44,6 +38,7 @@ version = "0.1.0"
 dependencies = [
  "askalono 0.3.0",
  "wasm-bindgen 0.2.40 (registry+https://github.com/rust-lang/crates.io-index)",
+ "wasm-bindgen-test 0.2.40 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -53,7 +48,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "backtrace-sys 0.1.24 (registry+https://github.com/rust-lang/crates.io-index)",
  "cfg-if 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.43 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.58 (registry+https://github.com/rust-lang/crates.io-index)",
  "rustc-demangle 0.1.9 (registry+https://github.com/rust-lang/crates.io-index)",
  "winapi 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
@@ -63,15 +58,10 @@ name = "backtrace-sys"
 version = "0.1.24"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "cc 1.0.25 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.43 (registry+https://github.com/rust-lang/crates.io-index)",
+ "cc 1.0.37 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.58 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
-[[package]]
-name = "build_const"
-version = "0.2.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-
 [[package]]
 name = "bumpalo"
 version = "2.2.2"
@@ -84,8 +74,11 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
 name = "cc"
-version = "1.0.25"
+version = "1.0.37"
 source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "rayon 1.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
+]
 
 [[package]]
 name = "cfg-if"
@@ -93,50 +86,51 @@ version = "0.1.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
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-]
-
-[[package]]
-name = "crc32fast"
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 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "cfg-if 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "wasm-bindgen 0.2.40 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
 name = "crossbeam-deque"
-version = "0.2.0"
+version = "0.6.3"
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- "crossbeam-utils 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "crossbeam-epoch 0.7.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "crossbeam-utils 0.6.5 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
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-version = "0.3.1"
+version = "0.7.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
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  "cfg-if 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)",
- "crossbeam-utils 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "crossbeam-utils 0.6.5 (registry+https://github.com/rust-lang/crates.io-index)",
  "lazy_static 1.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "memoffset 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "nodrop 0.1.12 (registry+https://github.com/rust-lang/crates.io-index)",
  "scopeguard 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
+name = "crossbeam-queue"
+version = "0.1.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "crossbeam-utils 0.6.5 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "crossbeam-utils"
-version = "0.2.2"
+version = "0.6.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "cfg-if 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "lazy_static 1.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -165,20 +159,28 @@ dependencies = [
 ]
 
 [[package]]
-name = "flate2"
-version = "1.0.7"
+name = "futures"
+version = "0.1.28"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
+[[package]]
+name = "glob"
+version = "0.2.11"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "crc32fast 1.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.43 (registry+https://github.com/rust-lang/crates.io-index)",
- "miniz_oxide_c_api 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
-]
 
 [[package]]
 name = "itoa"
 version = "0.4.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
+[[package]]
+name = "js-sys"
+version = "0.3.17"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "wasm-bindgen 0.2.40 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "lazy_static"
 version = "1.3.0"
@@ -186,7 +188,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
 name = "libc"
-version = "0.2.43"
+version = "0.2.58"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
@@ -199,38 +201,14 @@ dependencies = [
 
 [[package]]
 name = "memchr"
-version = "2.1.1"
+version = "2.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "cfg-if 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.43 (registry+https://github.com/rust-lang/crates.io-index)",
- "version_check 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)",
-]
 
 [[package]]
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 version = "0.2.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
-[[package]]
-name = "miniz_oxide"
-version = "0.2.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "adler32 1.0.3 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
-[[package]]
-name = "miniz_oxide_c_api"
-version = "0.2.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "cc 1.0.25 (registry+https://github.com/rust-lang/crates.io-index)",
- "crc 1.8.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.43 (registry+https://github.com/rust-lang/crates.io-index)",
- "miniz_oxide 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
 [[package]]
 name = "nodrop"
 version = "0.1.12"
@@ -254,7 +232,7 @@ name = "num_cpus"
 version = "1.8.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "libc 0.2.43 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.58 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -275,40 +253,41 @@ dependencies = [
 
 [[package]]
 name = "rayon"
-version = "1.0.3"
+version = "1.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "crossbeam-deque 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "crossbeam-deque 0.6.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "either 1.5.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "rayon-core 1.4.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rayon-core 1.5.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
 name = "rayon-core"
-version = "1.4.1"
+version = "1.5.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "crossbeam-deque 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "crossbeam-deque 0.6.3 (registry+https://github.com/rust-lang/crates.io-index)",
+ "crossbeam-queue 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "crossbeam-utils 0.6.5 (registry+https://github.com/rust-lang/crates.io-index)",
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  "num_cpus 1.8.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
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-version = "1.1.2"
+version = "1.1.7"
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 dependencies = [
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- "memchr 2.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "regex-syntax 0.6.5 (registry+https://github.com/rust-lang/crates.io-index)",
+ "aho-corasick 0.7.3 (registry+https://github.com/rust-lang/crates.io-index)",
+ "memchr 2.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "regex-syntax 0.6.7 (registry+https://github.com/rust-lang/crates.io-index)",
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  "utf8-ranges 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)",
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 [[package]]
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+version = "0.6.7"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
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@@ -330,7 +309,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "byteorder 1.2.7 (registry+https://github.com/rust-lang/crates.io-index)",
  "rmp 0.8.7 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde 1.0.89 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde 1.0.94 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -343,6 +322,11 @@ name = "ryu"
 version = "0.2.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
+[[package]]
+name = "scoped-tls"
+version = "1.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
 [[package]]
 name = "scopeguard"
 version = "0.3.3"
@@ -350,8 +334,11 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
 name = "serde"
-version = "1.0.89"
+version = "1.0.94"
 source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "serde_derive 1.0.89 (registry+https://github.com/rust-lang/crates.io-index)",
+]
 
 [[package]]
 name = "serde_derive"
@@ -370,7 +357,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "itoa 0.4.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "ryu 0.2.6 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde 1.0.89 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde 1.0.94 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -430,11 +417,6 @@ name = "utf8-ranges"
 version = "1.0.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
-[[package]]
-name = "version_check"
-version = "0.1.5"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-
 [[package]]
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 version = "0.2.40"
@@ -457,6 +439,16 @@ dependencies = [
  "wasm-bindgen-shared 0.2.40 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
+name = "wasm-bindgen-futures"
+version = "0.3.17"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "futures 0.1.28 (registry+https://github.com/rust-lang/crates.io-index)",
+ "js-sys 0.3.17 (registry+https://github.com/rust-lang/crates.io-index)",
+ "wasm-bindgen 0.2.40 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
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@@ -483,6 +475,29 @@ name = "wasm-bindgen-shared"
 version = "0.2.40"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
+[[package]]
+name = "wasm-bindgen-test"
+version = "0.2.40"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "console_error_panic_hook 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "futures 0.1.28 (registry+https://github.com/rust-lang/crates.io-index)",
+ "js-sys 0.3.17 (registry+https://github.com/rust-lang/crates.io-index)",
+ "scoped-tls 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "wasm-bindgen 0.2.40 (registry+https://github.com/rust-lang/crates.io-index)",
+ "wasm-bindgen-futures 0.3.17 (registry+https://github.com/rust-lang/crates.io-index)",
+ "wasm-bindgen-test-macro 0.2.40 (registry+https://github.com/rust-lang/crates.io-index)",
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+
+[[package]]
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+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
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+ "quote 0.6.9 (registry+https://github.com/rust-lang/crates.io-index)",
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+
 [[package]]
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@@ -502,50 +517,76 @@ name = "winapi-x86_64-pc-windows-gnu"
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+
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-"checksum serde 1.0.89 (registry+https://github.com/rust-lang/crates.io-index)" = "92514fb95f900c9b5126e32d020f5c6d40564c27a5ea6d1d7d9f157a96623560"
+"checksum serde 1.0.94 (registry+https://github.com/rust-lang/crates.io-index)" = "076a696fdea89c19d3baed462576b8f6d663064414b5c793642da8dfeb99475b"
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@@ -556,12 +597,17 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
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+"checksum zstd-sys 1.4.10+zstd.1.4.0 (registry+https://github.com/rust-lang/crates.io-index)" = "46f433134fbd0c37c9eb5929733df5f34bcdff464722eb93155fcee93eb57652"
diff --git a/wasm/pkg/Cargo.toml b/wasm/pkg/Cargo.toml
index c7f2c7d..ab0985e 100644
--- a/wasm/pkg/Cargo.toml
+++ b/wasm/pkg/Cargo.toml
@@ -11,6 +11,9 @@ crate-type = ["cdylib"]
 askalono = { version = "*", path = "../../" }
 wasm-bindgen = "0.2.40"
 
+[dev-dependencies]
+wasm-bindgen-test = "0.2"
+
 [build-dependencies]
 askalono = { version = "*", path = "../../" }
 
diff --git a/wasm/pkg/build.rs b/wasm/pkg/build.rs
index ae6ee2c..170c7c2 100644
--- a/wasm/pkg/build.rs
+++ b/wasm/pkg/build.rs
@@ -8,7 +8,7 @@ use std::path::Path;
 
 use askalono::Store;
 
-const EMBEDDED_CACHE: &str = "wasm-embedded-cache.bin.gz";
+const EMBEDDED_CACHE: &str = "wasm-embedded-cache.bin.zstd";
 
 // copied over from the CLI
 
diff --git a/wasm/pkg/src/lib.rs b/wasm/pkg/src/lib.rs
index 8cf23fe..67c2df0 100644
--- a/wasm/pkg/src/lib.rs
+++ b/wasm/pkg/src/lib.rs
@@ -2,6 +2,8 @@
 // SPDX-License-Identifier: Apache-2.0
 
 extern crate wasm_bindgen;
+#[cfg(test)]
+extern crate wasm_bindgen_test;
 
 extern crate askalono;
 
@@ -52,9 +54,25 @@ impl AskalonoStore {
     pub fn identify(&self, text: &str) -> MatchResult {
         let matched = self.store.analyze(&text.into());
         MatchResult {
-            name: matched.name,
+            name: matched.name.to_owned(),
             score: matched.score,
             license_text: matched.data.lines().join("\n"),
         }
     }
 }
+
+#[cfg(test)]
+mod test {
+    use wasm_bindgen_test::*;
+
+    static LICENSE_TEXT: &str = include_str!("../../../LICENSE");
+
+    #[wasm_bindgen_test]
+    fn identify() {
+        let store = super::AskalonoStore::new();
+
+        let m = store.identify(LICENSE_TEXT);
+
+        assert_eq!(m.name, "Apache-2.0");
+    }
+}