Next major release

[Baptouuuu]

This work is in preparation for the testing framework.

This PR will stay in this state until the whole innmind/foundation new API is stable enough to build innmind/testing.

[codecov]

Codecov Report

❌ Patch coverage is 93.60000% with 8 lines in your changes missing coverage. Please review.
✅ Project coverage is 96.82%. Comparing base (b836c6e) to head (1fd3504).
⚠️ Report is 23 commits behind head on develop.

Files with missing lines	Patch %	Lines
src/Map/Uninitialized.php	0.00%	4 Missing ⚠️
src/Sequence/Defer.php	0.00%	4 Missing ⚠️

Additional details and impacted files

@@              Coverage Diff              @@
##             develop      #74      +/-   ##
=============================================
- Coverage      96.93%   96.82%   -0.12%     
+ Complexity      1125     1063      -62     
=============================================
  Files             79       75       -4     
  Lines           6003     5475     -528     
=============================================
- Hits            5819     5301     -518     
+ Misses           184      174      -10     

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