Iterating through all kerning values

[mooman219]

The ttf_parser::kern::Subtable API allows you to get the kerning information for two ordered glyphs.

Given stateful kerning (format 1) is unsupported, would it be reasonable to add API to iterate through all kerning pairs in a subtable? This is definitely trivial for format 0, but I haven't looked into 2 and 3.

[RazrFalcon]

Yes, this is a good idea.

[RazrFalcon]

A lot later, but this feature is supported now. Only for format 0 at the moment.
In the latest release I've decided to finally expose all the internal data tables. So you can skip all the ttf_parser::Face logic and work directly with TrueType tables. It's still pretty rough, but a good start.