v0.3.0

• Added .desktop file for vtfview (#54)
• Added -q/--quiet option for all actions (pack, convert, extract) (#55)
• Rewrote image conversion (#55)
• Renamed pack's --outfile to --output to match other actions (#55)
• Fixed 16-bit PNG handling (#55)
• Fixed bug where pack's -o/--outfile option would be relative to the source file's directory (#55)
• Fixed GUI crash (#53)

Full Changelog: v0.2.0...v0.3.0