Tagging v0.23.1
Tagging v0.23.0
Merge branch 'hotfix/fix-nil-assignment-bug'
Tagging v0.21.0
Tagging v0.20.3
Tagging v0.20.2
Adjust version and tag in Podspec for release
Tagging v0.20.0
Tagging v0.20.0-rc1
Tagging v0.20.0-pre6