Make syntax as superset of JSON5

[lahmatiy]

Source: https://json5.org/

• Objects
  • Object keys may be an ECMAScript 5.1 IdentifierName.

    Approximately the same

  • Objects may have a single trailing comma.
• Arrays
  • Arrays may have a single trailing comma.
• Strings
  • Strings may be single quoted.
  • Strings may span multiple lines by escaping new line characters.
  • Strings may include character escapes.
• Numbers
  • Numbers may be hexadecimal.
  • Numbers may have a leading or trailing decimal point.

    In Jora numbers may have a leading point not trailing

  • Numbers may be IEEE 754 positive infinity, negative infinity, and NaN.
  • Numbers may begin with an explicit plus sign.
• Comments
  • Single and multi-line comments are allowed.
• White Space
  • Additional white space characters are allowed.

    Jora uses \s for white spaces, that's a bit wider than defined by JSON5

[lahmatiy]

Shipped in 1.0.0-beta.5