Rename Parser::try, since try is a keyword now

[RazrFalcon]

error: expected identifier, found reserved keyword `try`
   --> src/lib.rs:494:30
    |
494 |             important: input.try(cssparser::parse_important).is_ok(),
    |                              ^^^ expected identifier, found reserved keyword
help: you can escape reserved keywords to use them as identifiers
    |
494 |             important: input.r#try(cssparser::parse_important).is_ok(),
    |                              ^^^^^

[SimonSapin]

I’d rather add a method with another name that does the same thing and keep try. Do you have a suggestion for the new name?

[RazrFalcon]

try_parse?

[emilio]

Last time we discussed this @nox proposed just try_. I prefer that to longer names.

[SimonSapin]

Oh sorry @emilio, I missed your comment before making the PR.

[emilio]

It doesn't really matter. We can always add yet another method :)