Merge branch 'master' into 0.9-develop
Fixed SetClientMute params description.
(cherry picked from commit 6f917ded78ad5030eda28a483ebdaf7c06adb89c)
Fixed changelog format
Fixed typo in changelog
Bumped plugin version, updated changelog
Updated to version 0.9.263
Merge branch 'master' into develop

Conflicts:
	CHANGELOG.md
	game_upload/plugins/sourcecomms.smx
	game_upload/scripting/sourcecomms.sp