Fix 3.3.0 release year in CHANGELOG.md

[romanek-adam]

No description provided.

[asherf]

thanks!
will merge once test pass.

[codecov]

Codecov Report

Merging #264 (510e325) into master (e5fcca2) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #264   +/-   ##
=======================================
  Coverage   92.94%   92.94%           
=======================================
  Files          15       15           
  Lines        1418     1418           
=======================================
  Hits         1318     1318           
  Misses        100      100           

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