Parser, trivias and trivias_builder were edited to get all whitespaces.
Now Trivias struct store comments and whitespaces Vec. After that, i
will implement the no-irregular-whitespace rule.
P.S.: There isn't a way to implement this feature without lose a little
bit of performance, comparing with my last PR #1819 to minimax this
trouble instead of store the irregular whitespace as Span it was stored
as u32, i removed a map iterator and removed too a unused function. If
you have a suggestion about it pls give me a feedback.
c1cfd1759e