[MRG] http:// → https://

[DimitriPapadopoulos]

Reference issue

Tasks

• Unit tests added that reproduce issue or prove feature is working
• Fix or feature added
• Documentation and examples updated (if relevant)
• Unit tests passing and coverage at 100% after adding fix/feature
• Type annotations updated and passing with mypy
• Apps updated and tested (if relevant)

[codecov]

Codecov Report

Merging #870 (6ff888d) into master (708ccda) will not change coverage.
The diff coverage is n/a.

@@            Coverage Diff            @@
##            master      #870   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files           28        28           
  Lines         8639      8639           
=========================================
  Hits          8639      8639