Turned remaining throws into exceptions, moved WindowError definitions to source.

Improved exceptions.

Split up into multiple files and moved code around.

Added /EHsc to command line options.

Put windows typedef in a namespace.

Added typedef to distinguish windows types.

Refactored to use classes.

Draws text with DirectWrite.

Added resizing.

Trivial Direct 2D setup.

Basic window creation for Windows.

Initial commit