#56 permit Exclusion search filters in a file

[Neil Short]

I have recently started using ubh. I like it.

I built a file full of Inclusion search strings and it
seems to work just fine that way with the -b option.

How easy would it be to have another option to specify
a file that has Exclusion strings in it.

like :
... -I "Pink" -X "Pink_Floyd" to get all the Pink
songs but no Pink Floyd songs...
have a line in a file called include.txt for Pink
have a line in a file called exclude.txt for Pink_Floyd.

That might be a cool feature.