Update changelog.

Author: nedtwigg

CHANGES.md

@@ -12,6 +12,8 @@ We adhere to the [keepachangelog](https://keepachangelog.com/en/1.0.0/) format (
 ## [Unreleased]
 ### Changed
 * All `CHANGES.md` are now in keepachangelog format. ([#507](https://github.com/diffplug/spotless/pull/507))
+* We now use [javadoc.io](https://javadoc.io/) instead of github pages. ([#508](https://github.com/diffplug/spotless/pull/508))
+* We no longer publish `-SNAPSHOT` for every build to `master`, since we have good [JitPack integration](https://github.com/diffplug/spotless/blob/master/CONTRIBUTING.md#gradle---any-commit-in-a-public-github-repo-this-one-or-any-fork). ([#508](https://github.com/diffplug/spotless/pull/508))
 
 ## [1.27.0] - 2020-01-01
 * Ignored `KtLintStepTest`, because [gradle/gradle#11752](https://github.com/gradle/gradle/issues/11752) is causing too many CI failures. ([#499](https://github.com/diffplug/spotless/pull/499))