- Support hexadecimal, octal and binary number literals, template strings, and
tokenize everything more robustly in general.
- Tokens spanning over several lines (such as multiline strings and comments) no
longer leak their color into the line number gutter.
- The color scheme is preserved.
- The line numbers are now right-aligned instead of left-aligned, since that's
how practically every editor does it.
- Superfluos space in the line number gutter has been removed.
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