Mockito added and citation file edited

[youphendriks]

Added mockito to the pom file and added my name to the citation file (CITATION.cff) as an author (did not add my name under preferred-citation heading).
Also some extra commits as the result of me trying to fix the fork after forgetting to sync with the original BridgeDB repo.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 19.93%. Comparing base (7a8142e) to head (5560bbf).

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #238      +/-   ##
==========================================
- Coverage   19.95%   19.93%   -0.02%     
==========================================
  Files         164      164              
  Lines       10542    10542              
  Branches     1403     1403              
==========================================
- Hits         2104     2102       -2     
- Misses       8242     8243       +1     
- Partials      196      197       +1     

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[egonw]

Okay, I had a look at the changed files, but I am not sure what that filter is about. Can you please have a look at the changed files, and indicate what changes are important? Maybe we can discuss in person, then I can show you what I mean.