Update GitHub publishing actions

Release 0.22

Bugfix release for 0.21

Release 0.21

Revert "Create draft Github release on tag push"

This reverts commit 35dbdb0.

The automated release action is incompatible with RC tags.

Release 0.20

New features:
 - Quick Filters

Full changelog:
https://bitbucket.org/mlopatkin/android-log-viewer/issues?milestone=0.20

This is RC1 revision for 0.20

It's primary purpose is to test that autobuild machinery picks up tags
fine.

Ship 0.19

Changelog file updated

Release 0.18.1