v1.3.4

• If no branch is specified, derive revision from HEAD (#29)

v1.3.3

• Rename revision to rev to avoid collision with Capistrano method (#22)

v1.3.2

• Use ls-remote instead of rev-parse to fetch revision (#19)

v1.3.1

• Fix missing emoji for color-enabled messages (#14)

v1.3.0

• Don't show empty () if no revision found (#10)
• Introduce slack_destination which can override the stage. (#12)

v1.2.0

• Allow colored output to notifications (#9)
• Add a slack:failed task. (#7)
• Add the revision to the deploy stage message. (#6)
• Remove default before and after hooks (#4)

v1.1.0

• Override the application name with :slack_app_name (#1)

v1.0.0

• Birthday!