Addresses a major regression in v3.16 where several italic glyphs got messed up due to a Glyphs 3 version upgrade of the source file. This only affected users of v3.16 which was only released for about 12 hours before being replaced with this release v3.17. #360

• Fixes issues with appearance in Microsoft Word. #352 (note that #156 is still unresolved although we have made some progress in v3.16 toward developing workarounds for certain printers.)
• Fixes double grave interpolation issue. #317
• Fixes design issue with glyphs acutedblnosp, dblgravecmb, uni02F6 and uni02F5. #339
• Fixes missing or incorrect mark anchors in several turn* glyphs. #336
• Adds Baht currency glyph U+0E3F. #323
• Improvement to Latin iota (lower and upper case) glyphs. #340
• Improvement to some numerical fraction glyphs
• Adds a dummy DSIG table to address issues with Microsoft Office 2003 and older
• Improvements when using Inter with certain older Microsoft products by decomposing any nested components which some of that software has issues with