Use swiftformat

[fabianfett]

No description provided.

[codecov]

Codecov Report

Merging #43 into master will decrease coverage by 0.27%.
The diff coverage is 89.92%.

@@            Coverage Diff             @@
##           master      #43      +/-   ##
==========================================
- Coverage   91.02%   90.75%   -0.28%     
==========================================
  Files          41       41              
  Lines        3265     3310      +45     
==========================================
+ Hits         2972     3004      +32     
- Misses        293      306      +13     

Impacted Files	Coverage Δ
.../PureSwiftJSONCoding/JSONError+DecodingError.swift	29.09% <29.09%> (-3.52%)	⬇️
...Coding/Encoding/JSONUnkeyedEncodingContainer.swift	57.14% <57.14%> (+1.08%)	⬆️
...ng/Encoding/JSONSingleValueEncodingContainer.swift	61.81% <61.81%> (+0.27%)	⬆️
...ONCoding/Encoding/JSONKeyedEncodingContainer.swift	63.88% <63.88%> (+0.65%)	⬆️
Sources/PureSwiftJSONCoding/ArrayKey.swift	83.33% <81.81%> (ø)
Tests/JSONCodingTests/DateCodingTests.swift	88.88% <88.88%> (+0.51%)	⬆️
...coding/JSONSingleValueDecodingContainerTests.swift	90.58% <90.58%> (ø)
...s/Decoding/JSONUnkeyedDecodingContainerTests.swift	90.74% <90.74%> (ø)
...sts/Encoding/JSONKeyedEncodingContainerTests.swift	90.80% <90.80%> (ø)
...s/Encoding/JSONUnkeyedEncodingContainerTests.swift	90.80% <90.80%> (ø)
... and 23 more

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