* Fixed #540: Not correctly identifying stdlib modules
- update to 4.2.8
* Added --virtual-env switch command line option
* Added --enforce-whitespace option to go along with --check-only for more exact checks (issue #423)
* Fixed imports with a tailing '' and no space in-between getting removed (issue #425)
* Fixed issue #299: long lines occasionally not wrapped
* Fixed issue #432: No longer add import inside class when class starts at top of file after encoding comment
* Fixed issue #440: Added missing --use-parentheses option to command line tool and documentation
* Fixed issue #496: import* imports now get successfully identified and reformatted instead of deleted
* Fixed issue #491: Non ending parentheses withing single line comments no longer cause formatting issues
* Fixed issue #471: Imports that wrap the maximum line length and contain comments on the last line are no longer rendered incorrectly
* Fixed issue #436: Force sort within section no longer rearranges comments
* Fixed issue #473: Force_to_top and force_sort_within_sections now work together
* Fixed issue #484 & #472: Consistent output with imports of same spelling but different case
* Fixed issue #433: No longer incorrectly add an extra new-line when comment between imports and function definition
* Fixed issue #419: Path specification for skipped paths is not Unix/Windows inter-operable.
* Breaking Changes:
* Fixed issue #511: All command line options with an underscore, have had the underscore replaced with a dash for consistency. This effects: multi-line, add-import, remove-import, force-adds, --force-single-line-imports, and length-sort.
* Replaced the --enforce-whitespace option with --ignore-whitespace to restore original behavior of strict whitespace by default
