Release 0.18.6 (860)

Release 0.18.5 (850) and update extractor version

Update User-Agent

Fix regression: Unable to find explicit activity class

See TeamNewPipe#3114 (comment) for info on this crash.
This reverts ef90493 partly.

Update extractor and release 0.18.3 (830)

Bump version to 0.18.2 [hotfix release]

Merge pull request TeamNewPipe#2956 from TeamNewPipe/release_v0.18.1

Release v0.18.1

Add SoundCloud audio stream extraction fix to changelog

Fix release build