Added the ability to move emitters with the arrow keys;
Glow effects on upper layers now render above alpha-blended bullets and effects (previously below them);
Fixed an issue where editing tags in the treeview would be incorrect when the emitter is disabled;
Fixed an issue where modifying the ID would force the tag to be modified;
Fixed an issue where the ID sequence numbers in tags would not increment when copying or duplicating Affectors and Linked Duplicates;
Fixed an issue in the Unity player where the outside detection of Affectors was incorrect;
Fixed an issue in the Unity player where the Clear Size of custom bullet patterns did not take effect;
Fixed an issue in the Unity player where the player's movement range was incorrect with a semi-transparent UI;
Fixed an issue in the Unity player where some kinds of enemies would leave remnants after being destroyed;
Fixed an issue in the Unity player where emitters bound to enemy planes would not be destroyed after the enemy plane was destroyed;
Fixed an issue in the Unity player where sub-emitters would not be destroyed when going off-screen.
