Ygt TrueType hint editor

Ygt is an editor for TrueType hints. For instructions, see the document YGT-Intro.pdf. Version 0.2.0 adds the ability to add hints generated by Ygt to those already in the font. Two executable files area also offered: one for the M1 Mac and one for 64-bit x86 Windows machines. Version 0.2.2 adds alpha blending and gamma correction for preview and Font View text, improving display quality; also several optimizations.