🎉 Updated all sample code to adopt Swift 5 syntax and changes in the macOS 10.14 SDK

[LumingYin]

🎉 Updated all sample code to adopt Swift 5 syntax and changes in the macOS 10.14 SDK

All projects and Playgrounds (including intermediate project in each chapter's folder) are:

• Migrated to Swift 5 syntax
• Builds with no errors or warnings on the latest toolchain with the macOS 10.14 SDK
• Behaves and runs correctly on macOS 10.14 as intended by the original author

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Specific changes in ImageTiling:

• Disables translatesAutoresizingMaskIntoConstraints, which are enabled by default on newer versions of macOS, so that scroll views have the correct content sizes

Specific changes in RaiseMan, CarLot and ZIPspector:

• Add necessary explicit @objc annotation to remove reliance on deprecated inference rules
• Explicitly call Swift.print() instead of print() to avoid runtime exceptions

Specific changes in RanchForecast and RanchForecastSplit:

• Enabled NSAllowsArbitraryLoads under NSAppTransportSecurity so that the app would load data
• Fixed WebViews so that they no longer default to zero-width when running on macOS 10.12 or above