Auxly

=== Changed
- If an exception is caught and not re-thrown, `trycatch()` will now return the result of `oncatch`.
- Updated methods of `File` and `Path` to return None rather than throwing exceptions if the file/directory doesn't exist.

=== Fixed
- Fixed Python 2.7/<3.6 issue with `filesys.walkfiles()`.

=== Fixed
- Fixed issue where `filesys.copy()` would create extra directory when copying files without an extension.

=== Changed
- Refactored `filesys.walkfiles()` to use `os.scandir()` from the standard library to improve performance.

=== Changed
- The `_StartedProcess` objects returned by `shell.start()` will now call their `stop()` method when the application exits.

=== Added
- The `_StartedProcess` objects returned by `shell.start()` now include the PID.

=== Changed
- Changed how `shell.start()` works, it now starts the command as a silent background process. Attempts to fix strange behavior seen on Windows.