[EngineConfig] Bump version to 0.0.11.

[BlockCursor] Fixed right-click holding.

[ServerConnectState|TitleScreenState] Small fixes for low resolution.

[external/gamekit] Updated. Client and server now have different name…

…s in the log.

[ServerConnectState] Now prints connection error messages instead of …

…closing the client.

Small fixes for Windows compilation.

[Server] Now handles client socket disconnection properly.

Fixed scaling issue on Windows.

Precision improvements (Part 5)

Get rid of floats when calculating chunk position from block position. This can be done in integers. Since CHUNK_WIDTH etc. are guaranteed to be powers of two, using & -N is equivalent to doing & ~(N-1), or put differently, making it divisible by N. That makes the division exact, and allows the compiler to transform it into a plain shift (tested with both gcc and clang).

We did the same in Part 3 of this series.

[client/main] Added missing header for Windows.