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I see there is no difference between master and 2.1 branch on github - https://github.com/vanillaforums/Garden/compare/master...2.1
And Master branch is bumped into 2.2 - https://github.com/vanillaforums/Garden/commit/cc9f8f3958e98519df4cb3c845cbca0ddc5e6cbc
Vanilla is sweet & support is great, to encourage volunteers, please donate.