Changes between #1701 and #1702

#1702 (Feb 2, 2020, 9:04:18 AM)

1. build for 1.15.2 (commit: a4e39fa) — agoodwin / detail
2. implement action_bar deprecation, clean up 'actionbar' command a bit (commit: a8c0c3f) — agoodwin / detail
3. Add catch for null chat packet, for #2129 (commit: 9089ff1) — agoodwin / detail
4. fix Location.skull_skin mech, fixes #2138 (commit: f3af565) — agoodwin / detail