Changes to command line arguments, quality of use updates
- (possibly breaking) change behaviour of the `-o`, `--out` and `-d`, `--dir` arguments
- `-o`, `--out` now specifies output file name rather than output file path
- `-o`, `--out` and `-d`, `--dir` can be formatted
- `-o`, `--out` complements `-d`, `--dir` argument rather than overrides it
- added `-e`, `--ext` to specify clip file extension
- added `-tf`, `--timestamp-format` to specify format of timestamp added to the end of clip path
- add timestamp confirmation for both random timestamps
See README or `pymtheg --help` for more information.