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 94.07895% with 9 lines in your changes missing coverage. Please review.
✅ Project coverage is 91.51%. Comparing base (aa5f4c6) to head (ff14ea8).
⚠️ Report is 10 commits behind head on develop.

Files with missing lines	Patch %	Lines
src/Environment.php	84.21%	6 Missing ⚠️
src/Environment/GlobalEnvironment.php	0.00%	2 Missing ⚠️
src/Main.php	0.00%	1 Missing ⚠️

Additional details and impacted files

@@              Coverage Diff              @@
##             develop      #16      +/-   ##
=============================================
- Coverage      92.08%   91.51%   -0.57%     
- Complexity       289      301      +12     
=============================================
  Files             37       38       +1     
  Lines           2300     2158     -142     
=============================================
- Hits            2118     1975     -143     
- Misses           182      183       +1     

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