Tweaks and fixes

Improvements:

• Reduced the initial download size by factor of 9 or so.
  (by changing embedded base64 to be a separately fetched ZIP instead)
• Added an offline version
  (which you can find on the itch page)

Fixes:

• Fixed ominous clipping on fractional scales and specific rendering positions in Chromium
  (was caused by slightly-off bounding box calculation)
• Fixed letters missing holes (only in Chromium?) under specific circumstances
  (was caused by getting "number of contours" header counter wrong, unclear why it would break only sometimes)
• New! Fixed leading left padding in glyphs getting cut off.