Set glyph widths automatically
Merge pull request #95 from adamhooper/horiz-adv-x

Set glyph widths automatically
Hack/workaround for single icon fonts ("Font contains no glyphs" error).
Use exit status to determine fontforge failure
Merge pull request #99 from rogercampos/user-exit-status

Use exit status to determine fontforge failure
Merge branch 'master' into 1.0.1-bugfixes