Break apart the CHANGELOG (#1607)

Add some documentation about failed releases as well

Author: Luke Bowerman

CHANGELOG.md

@@ -92,6 +92,17 @@ We follow a [semantic versioning scheme](https://semver.org/). That means:
 1.  Pull latest master
 1.  `yarn release`
 
+#### Undoing a failed release
+
+Sometimes the release process will fail mid-way (generally due to NPM authentication issues).
+
+Follow these instructions if you run into a case where you have a "failed" release and need to unwind it to try again. Usually the complexity lies in the case where Lerna has updated package hashes and pushed tags but authentication to NPM failed.
+
+1. Get the release commit hash `git log` to see if there's a commit and if so get the commit hash
+1. Revert the release commit `git revert YOURHASHHERE`
+1. Delete the local tag `git tag -d v0.0.0` (insert appropriate version number)
+1. Delete the remote tag `git push --delete origin v0.0.0`
+
 ### 4. Tooling
 
 ### Automate code formatting and correctness whenever possible

README.md

@@ -0,0 +1,19 @@
+# Changelog
+
+All notable changes to this project will be documented in this file.
+
+The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
+and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
+
+## [0.9.16]
+
+### Changed
+
+- `ComponentsProvider` now includes `ScrollLockContext` to manage all scroll locks for `Dialog` and `Popover`
+  - Where previously `DialogContext` properties `enableScrollLock`, `disableScrollLock`, and `scrollLockEnabled` could previously be used to take control of a scroll lock, now use `ScrollLockContext` properties `enableCurrentLock`, `disableCurrentLock`, and `activeLockRef` to do so.
+
+## [0.9.14]
+
+### Changed
+
+- `ComponentsProvider` now takes `colors` prop instead of `coreColors` and accepts `CoreColors & IntentColors`

packages/components-providers/CHANGELOG.md

@@ -0,0 +1,12 @@
+# Changelog
+
+All notable changes to this project will be documented in this file.
+
+The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
+and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
+
+## [0.9.15]
+
+### Changed
+
+- `@looker/components-test-utils` helpers will no longer produce `globalStyles`

packages/components-test-utils/CHANGELOG.md

@@ -0,0 +1,12 @@
+# Changelog
+
+All notable changes to this project will be documented in this file.
+
+The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
+and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
+
+## [0.9.16]
+
+### Preview / Experimental
+
+- Experimental: `@looker/components-theme-editor` package