Added return type annotations for col, line, and lineno.

Fixed bug when warn_ungrouped_named_tokens_in_collection warning was raised when assigning a results name to an original_text_for expression. (Issue unexpected "warn_ungrouped_named_tokens_in_collection" warnings in versions >2.4.0 #110, would raise warning in packaging.)

Fixed internal bug where ParserElement.streamline() would not return self if already streamlined.

Changed run_tests() output to default to not showing line and column numbers. If line numbering is desired, call with with_line_numbers=True. Also fixed minor bug where separating line was not included after a test failure.