Allow to specify property values when insert() or save()

[Tigrov]

Q	A
Is bugfix?	❌
New feature?	✔️
Breaks BC?	❌
Fixed issues

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 89.21%. Comparing base (48c7539) to head (a442d3e).
Report is 1 commits behind head on master.

Additional details and impacted files

@@             Coverage Diff              @@
##             master     #424      +/-   ##
============================================
+ Coverage     89.18%   89.21%   +0.03%     
- Complexity      563      566       +3     
============================================
  Files            17       17              
  Lines          1359     1363       +4     
============================================
+ Hits           1212     1216       +4     
  Misses          147      147              

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