v2.5.0

Added Slack v2 API support (oauth flow, scopes, tokens).
Removed additional API calls from callback phase.
Removed mapping of specific access-token fields to auth-hash info section.
Implemented deep-trace logging, activated with ENV['OMNIAUTH_SLACK_DEBUG']=true
Improved AccessToken#has_scope? functionality.
Added optional OmniAuth::Slack::VerifySlackSignature middleware (experimental).
Numerous code improvements and debugging.

v2.4.1 (2018-09-18)

Set client_options[:auth_scheme] to :basic_auth, as OAuth2 gem does not yet make this the default. [wbr]
Stop using :setup option to manipulate site uri subdomain. [wbr]
Override client method to manipulate site uri subdomain. [wbr]
Allow apps.permissions.users.list call to be excluded by user. [wbr]
Fix gemspec dep for omniauth-oauth2. [wbr]
Add experimental class method ad_hoc_client. [wbr]

Initial release of ginjo-omniauth-slack

Update gemspec dependencies.
Add/fix AuthHash extra['scopes_requested']. [wbr]
Refactor building of AuthHash to dynamically call additional API requests if necessary, scope permitting. [wbr]
Add potential bots.info call, if bots info is not included in authorization response. [wbr]
Add option to preload all possible user/team/bot data, using threads, after initial authorization token is received. [wbr]
Use a method-specific mutex/semaphore for each API-call method when utilizing threads. [wbr]
Add options to include or exclude specific API calls. [wbr]
Ensure jruby compatibility. [wbr]
Initial support for additional_data option, allowing additional API calls during callback phase. [wbr]
Add support for redirect_uri option (covers PR kmrshntr#39). [wbr]
Initial support for Workspace apps and tokens. [wbr]
Support setting slack subdomain at runtime with team_domain option. [wbr]
Add token scopes to AuthHash credentials hash. [wbr]
Append AuthHash extra['raw_info'] section with full response of all API requests. [wbr]
Respect skip_info option. [wbr]
Don't insert NA in empty AuthHash fields, leave them as nil. [wbr]
Add test coverage for new functionality. [wbr]

The specifics of these commits may or may not be relevant in the ginjo fork, but their functionality is covered in one way or another.