v1.3.21 released and latest update

In this version, I rewrote most of the code in the game and with this, I have added and removed various things:

• Added camera effects.
• A enemy was removed (SCP-087-B).
• A secret was added.
• Changed textures.
• Generation system was rewritten (with others floor variations).
• x86 (32 bits) version.

And with this, there will be no more game updates. Enjoy!