More tests
More tests

* Split required into required and recommended
* New tests for unnecessary and empty fields

moyogo/fontbakery,googlefonts/fontbakery,moyogo/fontbakery,moyogo/fontbakery,googlefonts/fontbakery,graphicore/fontbakery,graphicore/fontbakery,graphicore/fontbakery,googlefonts/fontbakery