v0.2.0

• Improved AppServer implementations:
  • Added overrideable init() method to assist in initialization since constructor is final.
  • Added support for setting AppCredentials on the base AppServer.
• Improved Deferrer implementations:
  • Moved PreAckDeferrer to new Deferral namespace.
  • Added ShellExecDeferrer to allow deferring via a background shell_exec call.
  • Added DeferredContextCliServer for processing deferred Contexts via CLI.
  • Fixed initialization bug in Ack listener.
• Improved MultiTenantHttpServer implementation:
  • Added support for more lenient/intuitive app registrations.
  • Added Coerce::application() helper.
• Improved Auth components:
  • Fixed bug in AuthMiddleware that validated credentials too early.
  • Updated AppCredentials::supports*() methods.
  • Added missing App::withBotToken() method.