Add serif fonts with Hebrew coverage. Without FreeMono I was getting a *non-monospace* fallback on Ubuntu for Hebrew chars! (That's a fonts / fontconfig bug, will report details on https://bugs.launchpad.net/ubuntu-font-family/+bug/932958
Add serif fonts with Hebrew coverage.
Without FreeMono I was getting a *non-monospace* fallback on Ubuntu for Hebrew chars!
(That's a fonts / fontconfig bug, will report details on https://bugs.launchpad.net/ubuntu-font-family/+bug/932958

lynnshahuang/mathdown,lynnshahuang/mathdown,martindale/mathdown,martindale/mathdown,lynnshahuang/mathdown,martindale/mathdown