Merge #548 and #552

[jas32096]

Closes #548 and #552

[jas32096]

Alright. Should be working now, with the new syntax.

Note: For invoking from the command line, you'll need to surround the search with quotes like:
    mpsyt '/best music -d long -a year'

[ids1024]

I found an issue with this. If you try a command like /query --some-invalid-argument or /query --help, it prints a message then exits. The message is fine, but it shouldn't terminate mpsyt.

I don't know if there is a way to change that behavior with argparse. I don't see anything in the docs.

Edit: It looks like getopt raises an exception instead of exiting, so it may be more suitable. I think argparse is better though if there is a way to achieve this.

[jas32096]

Right. I also forgot about passing on extra args with, kwargs, but I'm not gunna do that, for the time being. I'll try surrounding the parse with a try/except

[jas32096]

Made some changes and really tried to beat it up this time.

One of the last things I tested with was / --this -qwerty -a 2015-09-22 this is a test --duration long --bad -c --, which is was able to handle fine, ignoring the unused arguments.

[ids1024]

Oh, I didn't know that sys.exit() triggers a catchable exception. Nice!