Update to 3.1 and a dash feature

This is an update to switch over to a plugin model that can be used with the newly released version of GBStudio 3.1! Exciting!

It also adds some features to the dash, so that you can control if the player is allowed to dash through certain game elements, such as:

- Actors (ie. to avoid taking damage). Note that if you do want the player to collide with actors, the dash interpolation frames may need to be set higher.

- Triggers. Ie. if you have a column of lava that you want the player to dash through to avoid taking damage.

- Walls. Fairly self explanatory.