RELEASE-NOTES: Fix 3.3.1 release date

Release Diff 3.3.0

Merge pull request #110 from wmde/rel320

3.2.0 release

Merge pull request #96 from wmde/rel310

3.1.0 release

Merge pull request #94 from wmde/listpatcher-objects-2x

ListPatcher object comparison fix - backport to 2.x branch and release 2.3.0

Merge pull request #84 from legoktm/21x

Remove MediaWiki registration and release 2.2

3.0.0 release

2.1.0 release (#72)

Merge pull request #43 from wmde/rel

2.0 release

1.0.1 release