Provide specialized capabilities for cleaning up values in features.

This class is designed to provide a mechanism to clean up and process values in the key/value pairs of GenBank features. This is useful because in cases like:

/translation="MED YDPWNLRFQSKYKSRDA"

you'll end up with a value with s and spaces in it like: "MED YDPWEL..."

which you probably don't want.

This cleaning needs to be done on a case by case basis since it is impossible to interpret whether you should be concatenating everything (as in translations), or combining things with spaces (as might be the case with /notes).

__init__ ( self,  to_process=keys_to_process )

_clean_translation ( self,  value )

clean_value (
        self,
        key_name,
        value,
        )