Update changelogs.

Author: nedtwigg

CHANGES.md

@@ -10,6 +10,9 @@ This document is intended for Spotless developers.
 We adhere to the [keepachangelog](https://keepachangelog.com/en/1.0.0/) format (starting after version `1.27.0`).
 
 ## [Unreleased]
+## Headline changes
+- All steps now support roundtrip serialization (end of [#987](https://github.com/diffplug/spotless/issues/987)).
+- Spotless now supports [linting](https://github.com/diffplug/spotless/blob/main/CONTRIBUTING.md#lints) in addition to formatting.
 ### Changed
 * Allow setting Eclipse config from a string, not only from files ([#2337](https://github.com/diffplug/spotless/pull/2337))
 * Bump default `ktlint` version to latest `1.3.0` -> `1.4.0`. ([#2314](https://github.com/diffplug/spotless/pull/2314))

plugin-gradle/CHANGES.md

@@ -3,6 +3,10 @@
 We adhere to the [keepachangelog](https://keepachangelog.com/en/1.0.0/) format (starting after version `3.27.0`).
 
 ## [Unreleased]
+## Headline changes
+- The long `7.0.0.BETAX` period is finally over, Spotless for Gradle 7.0 is here!
+- Full, no asterisk support for configuration cache (end of [#987](https://github.com/diffplug/spotless/issues/987))
+- Spotless now supports [linting](https://github.com/diffplug/spotless/blob/main/CONTRIBUTING.md#lints) in addition to formatting.
 ### Changed
 * Allow setting Eclipse config from a string, not only from files ([#2337](https://github.com/diffplug/spotless/pull/2337))
 * Bump default `ktlint` version to latest `1.3.0` -> `1.4.0`. ([#2314](https://github.com/diffplug/spotless/pull/2314))

plugin-maven/CHANGES.md

@@ -3,6 +3,10 @@
 We adhere to the [keepachangelog](https://keepachangelog.com/en/1.0.0/) format (starting after version `1.27.0`).
 
 ## [Unreleased]
+## Headline changes
+- The long `2.44.0.BETAX` period is finally over (sorry, there was [a problem in Gradle land](https://github.com/diffplug/spotless/issues/987)).
+- Spotless now supports [linting](https://github.com/diffplug/spotless/blob/main/CONTRIBUTING.md#lints) in addition to formatting.
+  - help wanted: [maven api to suppress lints](https://github.com/diffplug/spotless/issues/2309)
 ### Changed
 * Bump default `ktlint` version to latest `1.3.0` -> `1.4.0`. ([#2314](https://github.com/diffplug/spotless/pull/2314))
 * Bump default `jackson` version to latest `2.18.0` -> `2.18.1`. ([#2319](https://github.com/diffplug/spotless/pull/2319))