feat: allow dynamic values for std. props

[stravo1]

all std. props other than arrays and objects can now be assigned dynamic values.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 63.56%. Comparing base (b4c1f00) to head (60f937b).
⚠️ Report is 3 commits behind head on develop.

Additional details and impacted files

@@           Coverage Diff            @@
##           develop     #526   +/-   ##
========================================
  Coverage    63.56%   63.56%           
========================================
  Files           27       27           
  Lines         2791     2791           
========================================
  Hits          1774     1774           
  Misses        1017     1017           

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