v1.3.0

Contains:

• Support for the workflow_run event (triggered by push or pull_request) (#138, #147)
• Typings for incoming event data (#147)
• Various dependency updates (#140, #141, #129, #130, #134, #143, #136, #146, #145, #144, #142)

Most of the above was thanks to contributions from @anarast and @electrofelix 🎉