Tengami v1.0.3

Here is the list of changes. They should fix several reasons why the game isn't launching on some machines.

• Changes to Open GL 2.1 initialization for people getting Open GL related error messages.

• Changes to Steam API initialization, so no one should have to disable the 'Steam Overlay' feature in order to launch the game.

Please keep reporting any issues you encounter with the game, so we can keep on stabilizing it. Thank you!