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.

Fix #22

[codecov]

Codecov Report

❌ Patch coverage is 91.90751% with 28 lines in your changes missing coverage. Please review.
✅ Project coverage is 93.75%. Comparing base (2c7a163) to head (e09f688).
⚠️ Report is 19 commits behind head on develop.

Files with missing lines	Patch %	Lines
src/Config.php	65.51%	10 Missing ⚠️
src/CircuitBreaker.php	0.00%	6 Missing ⚠️
src/ExponentialBackoff.php	20.00%	4 Missing ⚠️
src/Logger.php	20.00%	4 Missing ⚠️
src/FollowRedirections.php	33.33%	2 Missing ⚠️
src/Via.php	71.42%	2 Missing ⚠️

Additional details and impacted files

@@              Coverage Diff              @@
##             develop      #23      +/-   ##
=============================================
- Coverage      94.47%   93.75%   -0.73%     
- Complexity       255      272      +17     
=============================================
  Files             27       30       +3     
  Lines           2134     1952     -182     
=============================================
- Hits            2016     1830     -186     
- Misses           118      122       +4     

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