Plus putting some HTML to get figures as we can't use Alex's
markdown-figure extension right out of the box.

We used it to generate the UmeLoop family:

![UmeLoop](http://osp.kitchen/work/balsamine.2015-2016/tree/master/iceberg/Capture%20du%202015-04-13%2021:31:23.png)

Possibility to change the font height and ascent from the GUI.

We set the vwidth ("vertical width", meaning the height of the font)
so that the import of the PNGs are all scaled to this height.

It's now using Fontforge python API to load PNG into each glyph and then
autotrace it directly in Fontforge.

adjust scale, font ascent and font descent based on the letter 'h' for now. \n  Plus some attempt of autokerning.

Plus a new script to import png files into Fontforge and autracing it
directly in Fontforge through a python script.

Usage:
   python png2sfd.py MyFontName