Include latest changes from the Source Code Pro repository master
branch (adobe-fonts/source-code-pro@14875b7)
The Source Code Versions Hasklig v1.2 is based on are:
- Roman 2.032
- Italic 1.052
- Variable not supported
Most notably, this update resolves #123
Huge thanks to @pkq for looking into this issue in detail and kicking the ball off.