v0.9.0

Thank you for all the contributions!

Enhancements/Fixes

• Change ActionType to public #831 by @GLOFonseca
• Change type of ExcludeArchived field to bool in GetConversationsParameters #832 by @mzduke
• Make UserID optional in GetUserProfile() #894 by @itkq
• Add timepicker to UnmarshalJSON #918 by @tapih
• [socketmode] Add methods with passing context #923 by @im-kulikov

important note: #832, #894 are breaking changes.

Miscs

• Remove deprecated methods #910 by @kanata2
• slacktest: Save thread_ts to message #916 by @StupidScience
• Drop support for Go 1.12 #927 by @kanata2
• Fix broken pins example #928 by @kanata2
• Add support for Go1.16 #929 by @kanata2
• [skip-ci] Replace badge #930 by @kanata2