Update Friday - 2019.05.10

Feature

* boss fight framework

* custom bullet pattern framework

Enhancement

* PhysicsSystem performance tuning

* apply new portal asset

* prevent spawn shortcut on tunnel

* prevent highlight item looks like bullet

Bugfix

* fix player hitbox offsetY for be aimed by enemy

* fix bullet hixbox radius

* fix laser hixbox and debug draw

* make spawned enemy in to battle state directly

* fix casting shadow in build by disable all unused quility settings

* fix rune item drag and drop glitch

* prevent display ui template