Wrapped getUnit8() in a try...catch

[wyqydsyq]

Wrapping this if clause in a try...catch seems to alleviate the issue found in #10 and possibly #9

There seems to be no real negative impact in simply ignoring any exceptions generated by the tried code, the resulting tags seems to be completely fine, though a more graceful method of handling the exception should probably be implemented.

[ntuckerxx]

I've had the best results by wrapping the entire call to ID3Frame.parse in an exception handler, as there seem to be a handful of assumptions in there that don't hold for all files I've encountered. You can ignore frames that fail to parse and still process the rest of the file.

[osmihi]

I came here to propose the exact same change. Catching the exception here avoids unnecessarily failing the whole process due to one small problem in the tag. I agree that there may ultimately be a better place or additional places to put such a change, though.