Tinman v0.4.0

Added null-move pruning, which gives a significant improvement.
Added material draws (and drawish material) to evaluation.

Tinman v0.3.0

Changed to a principle variation search, which gives a small, but measurable improvement.

Note that I do not use Windows, so I have not tested the Windows executable.

Tinman v0.2.0

Added transposition table.
Added support for the following xboard commands: memory, sd.

Note that I do not use Windows, so I have not tested the Windows executable.

Another bug fix

Fixes queen-side castling and other move parsing issues (#12, #13, and #15).

Bug fix

Fixes #8: Engine does not respond to client while thinking.
Fixes #9: Stops pondering too early or too late.

A working engine

Engine has very basic functionality.