Biopython Genbank writer not splitting long lines
I read the Biopython Genbank record source code carefully and realized I wasn’t using the Qualifier class correctly. 

After reading the source code again, I realized I was using the data structure incorrectly.  I need to use the Qualifier class to add a key and feature.  This is formatted correctly and solves the problem.

feature = Feature()
# Strict Genbank format calls non-standard things misc_feature
feature.key = "misc_feature"
#need to add 1 to start list since csv counting is off
feature.location = "{}..{}".format(int(start_list[i]) +1, end_list[i])
liability_qualifier = Qualifier()
liability_qualifier.key = '/note="'
liability_qualifier.value = '\"{}\"'.format(liability).split(":")[1]
feature.qualifiers.append(liability_qualifier)