Update changelog after 4.0.5 release

[masokol]

No description provided.

[codecov-commenter]

Codecov Report

Merging #555 (9470d94) into ecchronos-4.0 (98ebb3d) will increase coverage by 0.03%.
The diff coverage is n/a.

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@@                 Coverage Diff                 @@
##             ecchronos-4.0     #555      +/-   ##
===================================================
+ Coverage            77.31%   77.35%   +0.03%     
- Complexity            1299     1300       +1     
===================================================
  Files                  134      134              
  Lines                 5550     5550              
  Branches               575      575              
===================================================
+ Hits                  4291     4293       +2     
+ Misses                1064     1063       -1     
+ Partials               195      194       -1     

see 1 file with indirect coverage changes

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