Enforce whitespace consistency

[scouten]

Very cool project; I've been looking for something like this.

I'm looking for a linter that enforces whitespace rules. Some things I'd like to enforce via automation:

• [ ] = as a token is always surrounded by exactly one space.
• [ ] [...] as an inline array syntax has no spaces inside the brackets.
• [ ] {...} as an inline table syntax has exactly one space inside the brackets.
• [x] No trailing whitespace on any line. (See #15.)
• [ ] No leading whitespace except if the line starts with a comment.
• [x] Exactly one newline character at end of file. (See also #6. Implemented by #14.)

Would you be open to a contribution that adds these rules? (If yes, I'll start looking into it.)

[adlerjohn]

Would you be open to a contribution that adds these rules?

Absolutely, and they would be very appreciated! In order to keep review times down, I suggest making a PR for each of them individually instead of all at once.