Add contributors

[baileythegreen]

Update list of contributors in Contributors.md with all individuals who have code that has been merged with the repo. Update .all-contributorsrc with other types of acknowledgement.

Type of change

• [ ] Bug fix (non-breaking change that fixes an issue)
• [ ] New feature (non-breaking change that adds functionality)
• [ ] Breaking change (fix or feature that would cause existing functionality not to work as expected)
• [ ] This change requires a documentation update
• [x] This is a documentation update

Action Checklist

• [x] Work on a single issue/concept (if there are multiple separate issues to address, please use a separate pull request for each)
• [ ] Fork the pyani repository under your own account (please allow write access for repository maintainers)
• [x] Set up an appropriate development environment (please see CONTRIBUTING.md)
• [x] Create a new branch with a short, descriptive name
• [x] Work on this branch
  • [x] style guidelines have been followed
  • [x] new code is commented, especially in hard-to-understand areas
  • [x] corresponding changes to documentation have been made
  • [ ] tests for the change have been added that demonstrate the fix or feature works
• [ ] Test locally with pytest -v non-passing code will not be merged
• [x] Rebase against origin/master
• [ ] Check changes with flake8 and black before submission
• [x] Commit branch
• [ ] Submit pull request, describing the content and intent of the pull request
• [ ] Request a code review
• [ ] Continue the discussion at Pull requests section in the pyani repository

[codecov[bot]]

Codecov Report

Merging #401 (6efa899) into master (1bed428) will not change coverage. The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #401   +/-   ##
=======================================
  Coverage   75.82%   75.82%           
=======================================
  Files          55       55           
  Lines        3747     3747           
=======================================
  Hits         2841     2841           
  Misses        906      906