Added old engine files (v0.1.1.a1)
Revert "Initial commit"

This reverts commit 9150c93a2f783ad83fb75c04128c331bcfbd6cec.
Revert "Added old engine files (v0.1.1.a1)"

This reverts commit 15bf10bdfb9ba4d76727a439f18279ffdff2318c.
Added CollisionNode (v0.1.1.a1)
Edits, changelog added (v0.1.1)
Merged v0.1.1.a1 to v0.1.1 (v0.1.1)
Final merge with v0.1.1.a1 (v0.1.1)
Merged v0.1.1 with master, producing public version v0.1.1 (v0.1.1)