- Reformat lines to 80 columns.
- Use logging instead of verbose/quiet other options.
- A few miscellaneous small fixes/tweaks to parameters. Removed some
file-path-relative stuff that assumed old directory structure.
This uses some new fns in nototools.tool_utils, see nototools#220.
third_party subdir is for forks/clones of external projects. The svg code
isn't a modification to that project, but an addition to the font-building
code in noto/color_emoji.
This also fixes a slight bug in the html generation, which set the default
large glyph image but forgot to set the hex version of the text below it.