Update changelog for 2.9.0

Author: Throne3d

CHANGELOG.md

@@ -1,18 +1,23 @@
 # Changelog
 This project adheres to [Semantic Versioning](http://semver.org/).
 
-## [2.9.0-alpha] - 2020-08-08
-Pre-release of a (relatively large) upcoming change to use discord.js v12! There were a lot of breaking changes in the upstream library, including removal of support for Node <12, which is what prompts me to make this into a pre-release rather than storming ahead to release it directly. If nobody reports bugs on this soon, and I don't spot any, I'll promote this into a full release!
+## [2.9.0] - 2020-10-03
+This release comes with a (relatively large) change to use discord.js v12!
+There were a lot of breaking changes in the upstream library, including removal of support for Node <12, which prompted a 2.9.0-alpha release before this main version.
+Everything seemed to go fine, which is why you're now receiving this latest update!
 
-**Please do test this out, if you're happy to risk breakages and report these bugs to me!**
+### Added
+* IRC nick colors are now customizable in the config (thanks to [KWeaver87](https://github.com/reactiflux/discord-irc/pull/561))
 
 ### Changed
-* Upgrade discord.js to 12.2.0, which changes a lot of how the bot works behind the scenes, and starts preparing us for upcoming Discord API changes - [#555](https://github.com/reactiflux/discord-irc/pull/555)
-* Add support for Node 14 ([#549](https://github.com/reactiflux/discord-irc/pull/549)); drop support for Node 6, 8 and 10 ([#550](https://github.com/reactiflux/discord-irc/pull/550)).
+* Upgrade discord.js to 12.3.1 (the pre-release came with 12.2.0) - this changes a lot of how the bot works behind the scenes, and prepares us for upcoming Discord API changes - [#555](https://github.com/reactiflux/discord-irc/pull/555), [#564](https://github.com/reactiflux/discord-irc/pull/564)
+* Add support for Node 14 ([#549](https://github.com/reactiflux/discord-irc/pull/549)); drop support for Node 6, 8 and 10 ([#550](https://github.com/reactiflux/discord-irc/pull/550))
 
 ### Fixed
-* A bunch of vulnerabilities listed in `npm audit` are now gone - [#544](https://github.com/reactiflux/discord-irc/pull/544), [#548](https://github.com/reactiflux/discord-irc/pull/548), [#551](https://github.com/reactiflux/discord-irc/pull/551), [#552](https://github.com/reactiflux/discord-irc/pull/552), [#553](https://github.com/reactiflux/discord-irc/pull/553)
+* A bunch of vulnerabilities listed in `npm audit` are now gone - [#544](https://github.com/reactiflux/discord-irc/pull/544), [#548](https://github.com/reactiflux/discord-irc/pull/548), [#551](https://github.com/reactiflux/discord-irc/pull/551), [#552](https://github.com/reactiflux/discord-irc/pull/552), [#553](https://github.com/reactiflux/discord-irc/pull/553), [#562](https://github.com/reactiflux/discord-irc/pull/562)
 * Log messages now typically take up one line again (fixing a relatively long-standing bug, at this point – oops!) - [#554](https://github.com/reactiflux/discord-irc/pull/554)
+* Mentioning the same user more than once in a single message is now fixed (thanks to [Qyriad](https://github.com/reactiflux/discord-irc/pull/541))
+* Our Discord client now uses a retry limit of 3 (rather than 1) on internal server errors (hopefully fixing [#461](https://github.com/reactiflux/discord-irc/issues/461)) - [#565](https://github.com/reactiflux/discord-irc/pull/565)
 
 ## [2.8.1] - 2020-03-16
 ### Fixed