v0.5.3 - Bugfix release

Deployment fixes:

• Instead of using prebuilt binary releases user now must compile minqlx on his/her own to escape problems where binary version of minqlx require Python 3.5, but user has the other version of Python (reported by many server admins, one at least here #91 (comment))
• Fixed a bug, where compiling against Python 3.8+ produced nonworking binary (reported by dr_traktor)

Plugin development:

• Added Overload gametype (@tjone270 via #92)
• Fixed limiter for minqlx.spawn_item (@tjone270 via #88)
• Fixed team_switch hook behavior for bots (reported by Zebby via #85)

Core development:

• Fixed crashing issues when hooking qagame's G_AddEvent (reported by @agkr234 via #94)