Update changelog since last release

[epergo]

👋 Hello there! I was having a look att what has been merged since the last release since it's been a while (September 2020) and decided to update the CHANGELOG.

WDYT? Did I miss anything?

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It's true that we didn't merge anything super important that should be released asap but I think we already have quite some things, maybe is time to cut a release?

[jkowens]

We need a 2.2 release so bad...and then a 3.0 release from the unstable branch. @zzak @namusyaka is there anything that can be done to get a release cut? We still have a few people interested in helping on this project, but the lack of releases is thoroughly discouraging.

[dentarg]

It's true that we didn't merge anything super important that should be released asap

Well, actually...

• 2.1.0 had some (unintentional) breaking changes, that have been fixed:
  • Respect content type set in superclass before filter #1649
  • Revert "Use prepend instead of include for helpers. Fixes #1213" #1662
• And in terms Ruby 3 compatibility these fixes not yet released
  • Fix Delegator to pass keyword arguments for Ruby 3.0 #1684
  • Fix use with keyword arguments for Ruby 3.0 #1701

(These included in the changelog update here, so thanks!)

[EduardoSimon]

Hi, is a 2.2.0 release planned then? We need to update our codebase to ruby 3.0 and pointing to master is not an option TBH.

[Kjarrigan]

A big 👍 for a release from me as well. Using master is no option for me either otherwise I would need to switch to something like grape which I really would like to avoid.

[salrepe]

Another 👍 here for a new release. Specially for #1701