New features: 

My friend, Small_Embers, told me to add a list of new features.

These features are:

Play and Edit Button: GUI disappears if playing your level, GUI reappears when editing.

Freeze/UnFreeze: If you click on an object, you can unfreeze it, move it to a different spot, and refreeze it.

I added these features, and they are working pretty well! It's now easier to play in play mode, and freeze/unfreeze makes it way easier to make your map! Thanks for the ideas, Small_Embers!