Release v0.21.1

[hovancik]

No description provided.

[codecov]

Codecov Report

Merging #521 into master will increase coverage by 1.7%.
The diff coverage is n/a.

@@            Coverage Diff            @@
##           master     #521     +/-   ##
=========================================
+ Coverage   46.02%   47.72%   +1.7%     
=========================================
  Files          14       14             
  Lines         880      880             
=========================================
+ Hits          405      420     +15     
+ Misses        475      460     -15

Impacted Files	Coverage Δ
app/main.js	35.42% <0%> (+1.82%)	⬆️
app/utils/naturalBreaksManager.js	90% <0%> (+3.33%)	⬆️
app/breaksPlanner.js	32.06% <0%> (+3.81%)	⬆️

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