v0.2.0

• Updated existing APIs.
• Added support for message actions.
• Added support for handling dialog cancellation.
• Added methods to SlackRtmClient to subscribe to and query for user presence events.
• Fixed a bunch of deserialization failures caused by missing getters (thanks to @eFloh for picking this up).
• Fixed typing of ConversationsApi.Open.
• SlackBot correctly sets Hub on incoming IMs.

Breaking Changes:

• ConversationsApi.Open takes in a channelId or userIds, and only returns a channel ID.
• ConversationsApi.Open no longer takes in returnIm. Use ConversationsApi.OpenAndReturnInfo instead.
• Removed UsersApi.List's presence parameter, as it is no longer supported.
• Removed UsersApi.SetActive method, as it is no longer supported.
• Most file events now only contain a file ID instead of a whole file, since that's what Slack sends.
• FileShare messages contain a Files list instead of a single File.
• Removed FileCommentsApi's Add and Edit methods, as they are no longer supported.
• IDialogSubmissionHandler must now implement HandleCancel. Just return Task.CompletedTask if you don't care about cancelled dialogs.
• DndApi.TeamInfo's userIds parameter is now required.
• With the addition of MessageAction support, there are a few "Action"-related renames:
  • Renamed ISlackActions to ISlackInteractiveMessages.
  • Renamed IActionHandler to IInteractiveMessageHandler.
  • Renamed SlackServiceConfiguration.RegisterActionHandler to RegisterInteractiveMessageHandler.