Features missing

[RaphGL]

• Add number separators using _ (example: 56_000 should be same as 56000)
• Add hexadecimal, binary and octal number literals through 0x, 0b and 0o
• Add support for floats
• Escape common escape characters in strings
• Add a raw string syntax like `here is a raw string`, so that people can opt out of the escaping

[RaphGL]

I need to create separate functions that check whether a char is a space or a digit or a valid unicode instead of relying on the libc functions so that the format has a stricter spec.

I think the KDL spec is a good starting point for what to chars to escape and what chars are considered language chars, digits, etc.