- parse_flag now only parses one digit instead of consuming an entirely
valid number
- match_number => match_coordinate
- match_coordinate now returns true if `ch()` is '.'
- parse_number no longer matches a +/-
- Don't crash when encountering one of the three unsupported path
commands. Instead, just skip them. No reason to crash the browser over a
silly SVG element :)
81187c4ead