v0.3

Version 0.3

- Added: compatibility with the uop art file (artLegacyMUL.uop, client Stygian Abyss+).
- Added: capability to show the art tiles from both the Enhanced Client art files (LegacyTexture.uop and Texture.uop).
- Updated: the UOP library was refactored and improved in every part. Added the capability to create and save a UOP file.
- Updated: refactored the uofiles library, renamed to uoclientfiles, which code is now in the "uocf" namespace.
- Updated: reorganized cpputils.