A library to: - Extract VTT hinting data from a OpenType font prepared with Microsoft Visual TrueType (VTT) and store it in a FontTools TTX dump - Merge it back from a TTX dump into an OpenType font and - Compile the data inside to font to ship it (turn TSI* tables into fpgm, etc.).

The primary use case is version control of hinting data of fonts.

This package installs the library for Python 3.