- Allow an optional `#...` comment to be specified in a line-separated list of paraters.
- Allow an optional `#...` comment to be specified in a line-separated list of paraters.

Example:

    struct Hi {
        foo     # hello
        bar     # world
    }

    var t = Hi(42, 43)

    say t.foo
    say t.bar

Extends https://github.com/trizen/sidef/commit/604c40fb02fc7e017274e53709380652e2d5001b

trizen/sidef,trizen/sidef,trizen/sidef,trizen/sidef