Fix modified mark clearing on save for nested models

[Olegt0rr]

__fields_modified__ cleared also for embedded models on save

Fixes #87

[codecov]

Codecov Report

Merging #88 (7133813) into master (541d411) will not change coverage.
The diff coverage is 100.00%.

@@            Coverage Diff            @@
##            master       #88   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files           12        12           
  Lines          883       883           
  Branches       143       143           
=========================================
  Hits           883       883           

Flag	Coverage Δ
tests-3.6-4	99.08% <100.00%> (ø)
tests-3.6-4.2	99.08% <100.00%> (ø)
tests-3.6-4.4	99.08% <100.00%> (ø)
tests-3.7-4	98.51% <100.00%> (ø)
tests-3.7-4.2	98.51% <100.00%> (ø)
tests-3.7-4.4	98.51% <100.00%> (ø)
tests-3.8-4	98.30% <100.00%> (ø)
tests-3.8-4.2	98.30% <100.00%> (ø)
tests-3.8-4.4	98.30% <100.00%> (ø)
tests-3.9-4	98.18% <100.00%> (ø)
tests-3.9-4.2	98.18% <100.00%> (ø)
tests-3.9-4.4	98.18% <100.00%> (ø)

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
odmantic/engine.py	100.00% <100.00%> (ø)

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 541d411...7133813. Read the comment docs.

[art049]

Thanks @Olegt0rr !