Develop -> Master merge, Release v6.7.0

[alexskr]

• add url datatype for attributes that should be restricted to HTTP/HTTPS #258

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 80.21%. Comparing base (573a5b0) to head (9cae83d).
⚠️ Report is 1 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #259      +/-   ##
==========================================
- Coverage   80.23%   80.21%   -0.03%     
==========================================
  Files          84       84              
  Lines        5874     5873       -1     
==========================================
- Hits         4713     4711       -2     
- Misses       1161     1162       +1     

Flag	Coverage Δ
unittests	80.21% <100.00%> (-0.03%)	⬇️

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