version 1.10 - feed parsing; debugging

Handle ranges of episode numbers (like 01-02).  Lots of other changes
to make TVT feed parsing better, too.  Parsed large amounts of TVT/BTN
feeds, not just the shows I subscribe to.

Add debug-feed option to defgroup.  The command line argument didn't
really do the trick because a single feed can't cover two different
sites.

Remove undocumented --debug-feed command line argument.