v0.18 Changelog update (cosmos#476)

* v0.18 Changelog update

* update README

* update go version in github workflows

* changelog update

.github/workflows/ci.yml

@@ -18,7 +18,10 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v3
-      - name: test & coverage report creation
+      - uses: actions/setup-go@v2
+        with:
+          go-version: '1.17.6' # The Go version to download (if necessary) and use.
+
         # Some tests, notably TestRandomOperations, are extremely slow in CI
         # with the race detector enabled, so we use -short when -race is
         # enabled to reduce the number of slow tests, and then run without
@@ -28,6 +31,7 @@ jobs:
         # We also do a 32-bit run. Even though this is executed on a 64-bit
         # system, it will use 32-bit instructions and semantics (e.g. 32-bit
         # integer overflow).
+      - name: test & coverage report creation
         run: |
           go test ./... -mod=readonly -timeout 5m -short -race -coverprofile=coverage.txt -covermode=atomic
           go test ./... -mod=readonly -timeout 5m

.github/workflows/docker.yml

@@ -16,7 +16,7 @@ jobs:
     steps:
       - uses: actions/setup-go@v2
         with:
-          go-version: "^1.15.4"
+          go-version: "^1.17.6"
       - uses: actions/checkout@v3
       - name: Prepare
         id: prep

CHANGELOG.md

@@ -2,9 +2,18 @@
 
 ## Unreleased
 
+## 0.18.0 (March 10, 2022)
+
+### Breaking Changes
+- Bumped Tendermint to 0.35.1
+
 ### Improvements
 
 - [\#445](https://github.com/cosmos/iavl/pull/445) Bump github.com/tendermint/tendermint to v0.35.0
+- [\#452](https://github.com/cosmos/iavl/pull/452) Optimization: remove unnecessary (*bytes.Buffer).Reset right after creating buffer.
+- [\#453](https://github.com/cosmos/iavl/pull/453),[\#456](https://github.com/cosmos/iavl/pull/456) Optimization: buffer reuse
+- [\#474](https://github.com/cosmos/iavl/pull/474) bump github.com/confio/ics23 to v0.7
+- [\#475](https://github.com/cosmos/iavl/pull/475) Use go v1.17
 
 ### Bug Fixes
 

README.md

@@ -9,7 +9,7 @@
 ![Test](https://github.com/cosmos/iavl/workflows/Test/badge.svg?branch=master)
 [![Discord chat](https://img.shields.io/discord/669268347736686612.svg)](https://discord.gg/AzefAFd)
 
-**Note: Requires Go 1.13+**
+**Note: Requires Go 1.17+**
 
 A versioned, snapshottable (immutable) AVL+ tree for persistent data.