Contributing guidelines?

[bolatovumar]

I'm wondering what the contributing guidelines for the project are.

I was working issue #3 and has success with implementing lining/old-school
OpenType feature, however, I'm not sure if what I did is acceptable
to the authors of the font.

It would be nice to know which files can be modified, how the font should
be built, what software is preferred (FontForge, Fontographer, etc...).

@dpk seems to have done some good work on his fork and added a bunch
of OpenType features and a makefile for building the WOFF version of the font
but his fork does not seem to have any guidelines either.

I'm excited to see the typeface used in Edward Tufte's books available
on the web as a free and open-source font but I think much can be
improved here so more people can contribute.

If more people contribute, the font will become more popular which
will draw more people to it which will in turn help improve the typography
on the web (a little bit, but still).

Examples
Fira Sans designed by Erik Spiekermann and released as an open-source
font by Mozilla has very clear contributing guidelines at https://docs.google.com/document/d/1QfxweGktJEdBvbd94y-5hiyqu32U9-h_ICPVs76Niyw

Source Sans Pro by Adobe is another example of a project with good
contribution guidelines.

[adamschwartz]

Hey @bolatovumar, I’d be happy to consider a suggested guideline for contributions, as circular as that may sound. 😉

@dpk has done some great work so perhaps he may have some suggestions as well.