Is there a way to include a font so it doesn't need to be installed?
No. Best to use a sprite-based font, for many reasons.
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You can now include fonts with the new version of the Resource Plugin.
Whoa - awesome! I'm not sure about how that works with font licensing though - I think some fonts prohibit being used in any way that the user could copy the font. AFAIK free fonts should be fine, though.