-Added the "Mask Instance" group (Group.6). When an object is placed in this group, it will apply collision detection and X/Y Speed similar to how the Player Mask is set up. Other features such as Slope Detection and Scenery PushOut are pre-configured. This can be used as a foundation to create other NPCs or enemies. Included is an example of an enemy that walks left/right with slope detection and gravity between multiple instances.

-Auto-Side Detect is disabled by default

-Fixed a few comments.