[#28] Cleaned up stardidi's green channel code

- Made recommended changes.
- Small corrections.
[#40] Smart UV

Smart UV project used in place of default UV unwrapping for exports
missing a UV map.
[#28] Some More Fixes

Made recommended changes.
[#37] Find Weightless Improved

- Works in any mode.
- Finds vertices not belonging to groups AND now vertices with a net
weight of 0.
- Selects the problem vertices.
- Well tested.
Merge pull request #58 from travnick/feature/smart_uvs

[#40] Smart UV
[#37] Small Corrections

- Added weight epsilon to account for floating point precision error.
[#28] Small Correction

- No longer overwrites original image.
Merge pull request #59 from travnick/feature/fix_weightless

[#37] Find Weightless Improved
Merge pull request #54 from travnick/feature/dds_repairs

[#28] Cleaned up stardidi's green channel code
Fixed version number/updated changelog
Merge pull request #62 from travnick/release/v4.13

Release/v4.13