[#62996658] This one is over. Now author_cocitations works w.r.t to the
user input threshold and some logics of previous version were corrected.
[#62802482] Test cases of the aforesaid story. Checked almost all cases
and found OK.
[# 63112276] no errors will be found in networks_test.py.
Authors.Coauthors.py had some errors, mainly because of the story
#62808308 which I am working on. That part will be uncommented once I
start on the test cases for coauthors.
[#62820502] tried pylint and deleting the extra spaces > 80 chars in
readers.wos, network_test.py , networks.authors.py. Some part of these
modules and other scripts as well, are remaining.