diff --git a/.circleci/config.yml b/.circleci/config.yml
index ca24ba48..cf6b6fd3 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -38,7 +38,6 @@ jobs:
               ./build.sh
             else
               echo "Building release $CIRCLE_TAG..."
-              echo $DOCKER_PASSWORD | docker login --username $DOCKER_USERNAME --password-stdin quay.io
               ./build.sh --release
             fi
 workflows:
diff --git a/Gopkg.lock b/Gopkg.lock
index ba7bceaa..c3053b74 100644
--- a/Gopkg.lock
+++ b/Gopkg.lock
@@ -3,46 +3,35 @@
 
 [[projects]]
   branch = "master"
-  digest = "1:6b250e53b3b7b9abd7e62f55875c234d2f8b77b846bff200fecafa2dc09af09a"
   name = "github.com/MakeNowJust/heredoc"
   packages = ["."]
-  pruneopts = ""
   revision = "e9091a26100e9cfb2b6a8f470085bfa541931a91"
 
 [[projects]]
-  digest = "1:b856d8248663c39265a764561c1a1a149783f6cc815feb54a1f3a591b91f6eca"
   name = "github.com/Masterminds/semver"
   packages = ["."]
-  pruneopts = ""
   revision = "c7af12943936e8c39859482e61f0574c2fd7fc75"
   version = "v1.4.2"
 
 [[projects]]
-  digest = "1:982e2547680f9fd2212c6443ab73ea84eef40ee1cdcecb61d997de838445214c"
   name = "github.com/cpuguy83/go-md2man"
   packages = ["md2man"]
-  pruneopts = ""
   revision = "20f5889cbdc3c73dbd2862796665e7c465ade7d1"
   version = "v1.0.8"
 
 [[projects]]
-  digest = "1:0deddd908b6b4b768cfc272c16ee61e7088a60f7fe2f06c547bd3d8e1f8b8e77"
   name = "github.com/davecgh/go-spew"
   packages = ["spew"]
-  pruneopts = ""
   revision = "8991bc29aa16c548c550c7ff78260e27b9ab7c73"
   version = "v1.1.1"
 
 [[projects]]
-  digest = "1:eb53021a8aa3f599d29c7102e65026242bdedce998a54837dc67f14b6a97c5fd"
   name = "github.com/fsnotify/fsnotify"
   packages = ["."]
-  pruneopts = ""
   revision = "c2828203cd70a50dcccfb2761f8b1f8ceef9a8e9"
   version = "v1.4.7"
 
 [[projects]]
-  digest = "1:d14365c51dd1d34d5c79833ec91413bfbb166be978724f15701e17080dc06dec"
   name = "github.com/hashicorp/hcl"
   packages = [
     ".",
@@ -54,151 +43,117 @@
     "hcl/token",
     "json/parser",
     "json/scanner",
-    "json/token",
+    "json/token"
   ]
-  pruneopts = ""
   revision = "8cb6e5b959231cc1119e43259c4a608f9c51a241"
   version = "v1.0.0"
 
 [[projects]]
-  digest = "1:870d441fe217b8e689d7949fef6e43efbc787e50f200cb1e70dbca9204a1d6be"
   name = "github.com/inconshreveable/mousetrap"
   packages = ["."]
-  pruneopts = ""
   revision = "76626ae9c91c4f2a10f34cad8ce83ea42c93bb75"
   version = "v1.0"
 
 [[projects]]
-  digest = "1:961dc3b1d11f969370533390fdf203813162980c858e1dabe827b60940c909a5"
   name = "github.com/magiconair/properties"
   packages = ["."]
-  pruneopts = ""
   revision = "c2353362d570a7bfa228149c62842019201cfb71"
   version = "v1.8.0"
 
 [[projects]]
-  digest = "1:096a8a9182648da3d00ff243b88407838902b6703fc12657f76890e08d1899bf"
   name = "github.com/mitchellh/go-homedir"
   packages = ["."]
-  pruneopts = ""
   revision = "ae18d6b8b3205b561c79e8e5f69bff09736185f4"
   version = "v1.0.0"
 
 [[projects]]
-  digest = "1:bcc46a0fbd9e933087bef394871256b5c60269575bb661935874729c65bbbf60"
   name = "github.com/mitchellh/mapstructure"
   packages = ["."]
-  pruneopts = ""
   revision = "3536a929edddb9a5b34bd6861dc4a9647cb459fe"
   version = "v1.1.2"
 
 [[projects]]
-  digest = "1:894aef961c056b6d85d12bac890bf60c44e99b46292888bfa66caf529f804457"
   name = "github.com/pelletier/go-toml"
   packages = ["."]
-  pruneopts = ""
   revision = "c01d1270ff3e442a8a57cddc1c92dc1138598194"
   version = "v1.2.0"
 
 [[projects]]
-  digest = "1:7365acd48986e205ccb8652cc746f09c8b7876030d53710ea6ef7d0bd0dcd7ca"
   name = "github.com/pkg/errors"
   packages = ["."]
-  pruneopts = ""
   revision = "645ef00459ed84a119197bfb8d8205042c6df63d"
   version = "v0.8.0"
 
 [[projects]]
-  digest = "1:256484dbbcd271f9ecebc6795b2df8cad4c458dd0f5fd82a8c2fa0c29f233411"
   name = "github.com/pmezard/go-difflib"
   packages = ["difflib"]
-  pruneopts = ""
   revision = "792786c7400a136282c1664665ae0a8db921c6c2"
   version = "v1.0.0"
 
 [[projects]]
-  digest = "1:2761e287c811d0948d47d0252b82281eca3801eb3c9d5f9530956643d5b9f430"
   name = "github.com/russross/blackfriday"
   packages = ["."]
-  pruneopts = ""
   revision = "05f3235734ad95d0016f6a23902f06461fcf567a"
   version = "v1.5.2"
 
 [[projects]]
-  digest = "1:d0431c2fd72e39ee43ea7742322abbc200c3e704c9102c5c3c2e2e667095b0ca"
   name = "github.com/spf13/afero"
   packages = [
     ".",
-    "mem",
+    "mem"
   ]
-  pruneopts = ""
   revision = "d40851caa0d747393da1ffb28f7f9d8b4eeffebd"
   version = "v1.1.2"
 
 [[projects]]
-  digest = "1:ae3493c780092be9d576a1f746ab967293ec165e8473425631f06658b6212afc"
   name = "github.com/spf13/cast"
   packages = ["."]
-  pruneopts = ""
   revision = "8c9545af88b134710ab1cd196795e7f2388358d7"
   version = "v1.3.0"
 
 [[projects]]
-  digest = "1:a1403cc8a94b8d7956ee5e9694badef0e7b051af289caad1cf668331e3ffa4f6"
   name = "github.com/spf13/cobra"
   packages = [
     ".",
-    "doc",
+    "doc"
   ]
-  pruneopts = ""
   revision = "ef82de70bb3f60c65fb8eebacbb2d122ef517385"
   version = "v0.0.3"
 
 [[projects]]
-  digest = "1:9ceffa4ab5f7195ecf18b3a7fff90c837a9ed5e22e66d18069e4bccfe1f52aa0"
   name = "github.com/spf13/jwalterweatherman"
   packages = ["."]
-  pruneopts = ""
   revision = "4a4406e478ca629068e7768fc33f3f044173c0a6"
   version = "v1.0.0"
 
 [[projects]]
-  digest = "1:cbaf13cdbfef0e4734ed8a7504f57fe893d471d62a35b982bf6fb3f036449a66"
   name = "github.com/spf13/pflag"
   packages = ["."]
-  pruneopts = ""
   revision = "298182f68c66c05229eb03ac171abe6e309ee79a"
   version = "v1.0.3"
 
 [[projects]]
-  digest = "1:1ed7a19588d3b74fc6a45fe89f95aa980a34870342fb9c3183b19cad08b18a1e"
   name = "github.com/spf13/viper"
   packages = ["."]
-  pruneopts = ""
   revision = "2c12c60302a5a0e62ee102ca9bc996277c2f64f5"
   version = "v1.2.1"
 
 [[projects]]
-  digest = "1:c587772fb8ad29ad4db67575dad25ba17a51f072ff18a22b4f0257a4d9c24f75"
   name = "github.com/stretchr/testify"
   packages = [
     "assert",
-    "require",
+    "require"
   ]
-  pruneopts = ""
   revision = "f35b8ab0b5a2cef36673838d662e249dd9c94686"
   version = "v1.2.2"
 
 [[projects]]
   branch = "master"
-  digest = "1:ff65401e40494de90fddaecf09b2954179d872a45d9c68b9b31da60f35e4ea73"
   name = "golang.org/x/sys"
   packages = ["unix"]
-  pruneopts = ""
   revision = "7e31e0c00fa05cb5fbf4347b585621d6709e19a4"
 
 [[projects]]
-  digest = "1:5acd3512b047305d49e8763eef7ba423901e85d5dd2fd1e71778a0ea8de10bd4"
   name = "golang.org/x/text"
   packages = [
     "internal/gen",
@@ -206,35 +161,20 @@
     "internal/ucd",
     "transform",
     "unicode/cldr",
-    "unicode/norm",
+    "unicode/norm"
   ]
-  pruneopts = ""
   revision = "f21a4dfb5e38f5895301dc265a8def02365cc3d0"
   version = "v0.3.0"
 
 [[projects]]
-  digest = "1:f0620375dd1f6251d9973b5f2596228cc8042e887cd7f827e4220bc1ce8c30e2"
   name = "gopkg.in/yaml.v2"
   packages = ["."]
-  pruneopts = ""
   revision = "5420a8b6744d3b0345ab293f6fcba19c978f1183"
   version = "v2.2.1"
 
 [solve-meta]
   analyzer-name = "dep"
   analyzer-version = 1
-  input-imports = [
-    "github.com/MakeNowJust/heredoc",
-    "github.com/Masterminds/semver",
-    "github.com/mitchellh/go-homedir",
-    "github.com/pkg/errors",
-    "github.com/spf13/cobra",
-    "github.com/spf13/cobra/doc",
-    "github.com/spf13/pflag",
-    "github.com/spf13/viper",
-    "github.com/stretchr/testify/assert",
-    "github.com/stretchr/testify/require",
-    "gopkg.in/yaml.v2",
-  ]
+  inputs-digest = "f57ef6dc90e246d714ccce27d4ee0d9fea7b69b615cb6058d26fa490304aa08c"
   solver-name = "gps-cdcl"
   solver-version = 1