Add Source to events

[msmakouz]

No description provided.

[codecov]

Codecov Report

Merging #18 (4e901dd) into 1.x (d4aebdd) will increase coverage by 0.05%.
The diff coverage is 78.57%.

@@             Coverage Diff              @@
##                1.x      #18      +/-   ##
============================================
+ Coverage     84.65%   84.71%   +0.05%     
  Complexity      145      145              
============================================
  Files            20       20              
  Lines           378      386       +8     
============================================
+ Hits            320      327       +7     
- Misses           58       59       +1     

Impacted Files	Coverage Δ
src/Event/MapperEvent.php	100.00% <ø> (ø)
src/EventDrivenCommandGenerator.php	77.77% <78.57%> (+0.63%)	⬆️
src/OptimisticLock.php	85.71% <0.00%> (+1.40%)	⬆️

---

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 d4aebdd...4e901dd. Read the comment docs.