Change the swift version to 4.2

[ollieatkinson]

Short description 📝

• 4.2.1 is an invalid specification for SWIFT_VERSION.

Solution 📦

• Change default to to 4.2

[pepicrft]

There are some legit issues on CI @ollieatkinson which might be related to your changes.

[kwridan]

Good catch!

The fixtures need a small update:
UIApplicationLaunchOptionsKey > UIApplication.LaunchOptionsKey

Worth a rebase on master as the fixtures structure has changed slightly.

[tuistbot]

	1 Warning
⚠️	Have you introduced any user-facing changes? If so, please take some time to update the documentation. Keeping the documentation up to date makes it easier for users to learn how to use Tuist.

Generated by 🚫 Danger

[ollieatkinson]

@kwridan I have rebased and pushed up the changes. @pepibumur Once CI gives it the green I will merge.

[codecov]

Codecov Report

Merging #225 into master will decrease coverage by 0.38%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master     #225      +/-   ##
==========================================
- Coverage    82.3%   81.92%   -0.39%     
==========================================
  Files         247      246       -1     
  Lines        8624     8446     -178     
==========================================
- Hits         7098     6919     -179     
- Misses       1526     1527       +1

Impacted Files	Coverage Δ
Sources/TuistKit/Generator/GeneratedProject.swift	0% <0%> (-100%)	⬇️
Sources/TuistKit/Models/Project.swift	16.66% <0%> (-31.55%)	⬇️
Sources/TuistKit/Models/Settings.swift	30.43% <0%> (-26.09%)	⬇️
Sources/TuistKit/Models/Target.swift	19.62% <0%> (-15.51%)	⬇️
Sources/TuistKit/Generator/SchemesGenerator.swift	45.45% <0%> (-11.69%)	⬇️
Sources/TuistKit/Graph/Graph.swift	85.51% <0%> (-1.29%)	⬇️
...itTests/Generator/Mocks/MockSchemesGenerator.swift	0% <0%> (ø)	⬆️
Sources/TuistKit/Generator/ProjectGenerator.swift	0% <0%> (ø)	⬆️
Tests/TuistKitTests/Models/TargetTests.swift	100% <0%> (ø)	⬆️
...uistKitTests/Generator/SchemesGeneratorTests.swift	100% <0%> (ø)	⬆️
... and 1 more

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[pepicrft]

Go ahead @ollieatkinson