Fixes for release

[nhooyr]

Closes #69

[codecov]

Codecov Report

Merging #74 into master will increase coverage by 0.44%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master      #74      +/-   ##
==========================================
+ Coverage      80%   80.44%   +0.44%     
==========================================
  Files          10       10              
  Lines         670      670              
==========================================
+ Hits          536      539       +3     
+ Misses        114      111       -3     
  Partials       20       20

Impacted Files	Coverage Δ
statuscode.go	100% <ø> (+5.88%)	⬆️
websocket.go	80.97% <0%> (-0.58%)	⬇️
statuscode_string.go	37.03% <0%> (+11.11%)	⬆️

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