Improved support

• Refactored mipmap loading to read in reverse order (largest->smallest). This resolves a rare OOB error caused by an off-by-8bytes offset into mipmap data. This could be reproduced most easily with all 6 faces of the map de_dust2's skybox textures.
• Added quality of life functions to more easily fetch the 'first' texture (highest-resolution, first frame mipmap).
• Made return types for image data uniform (replaces instances of []byte with []uint8). These type changes are won't affect compatability.

v1.1.1

Update README.md

Code quality improvements

v1.1.0

Update README.md

Code quality improvements

Not necessarily release-worthy, but I don't see any changes coming in the near future, so tagging the current HEAD

Initial release

Merge pull request #4 from Galaco/add-license-1

Create LICENSE

Initial release

• Read support for all supported data formats.
• Supports versions 7.1 - 7.5 inclusive
• All header properties across all versions available

No known incompatible files at this time.

• Does not support > 1 Z-Slice
• Does not support > 1 depth

Potential outstanding issues:

• Some textures have a header depth of 0, yet always contain data as if depth is 1. The reason behind this is unclear. A depth=0 image would have no data, which is invalid. Therefore, 0 depth is always treated as 1 depth.