1.3.0

!!!!! There are several potentially breaking changes in here, and a lot
of things changed, since this release covers two Mastodon versions and
then some !!!!!

• Several small bug fixes (Thanks goldensuneur, bowlercaptain, joyeusenoelle)
• Improved stream error handling (Thanks codl)
• Improvements to streaming:
  • Added on_abort() handler to streams
  • Added automatic reconnecting
  • POTENTIALLY BREAKING CHANGE: Added better error catching to make sure
    streaming functions do not just crash
• Mastodon v2.3 compatibility (sorry for the late release)
  • only_media parameter in timeline functions
  • focus support for media_upload()
  • Added media_update()
• Mastodon v2.4 compatibility
  • Added fields to account_update_credentials()
  • WebPush support:
    • Added push_subscription(), push_subscription_set(), push_subscription_update(),
      push_subscription_delete()
    • Added webpush crypto utilities: push_subscription_generate_keys(),
      push_subscription_decrypt_push()
• Added support for pinned toots, an oversight from 2.1.0: status_pin(), status_unpin()
• POTENTIALLY BREAKING CHANGE: Changed pagination attributes to not be part of the dict keys
  of paginated return values.
• Many internal improvements, more tests

Docs: https://mastodonpy.readthedocs.io/en/1.3.0/
PyPi: https://pypi.org/project/Mastodon.py/1.3.0