Tests#2

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jhildensperger wants to merge 6 commits intomasterfrom

Commits on Aug 13, 2018

Clean up examples for headings supported by Xcode
Jim Hildensperger
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Reorganise project structure to enable testability
Jim Hildensperger
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Move swift access level enum to its own file
Jim Hildensperger
committed
Remove unnecessary public declarations
Jim Hildensperger
committed
Add first functional test
Jim Hildensperger
committed

Commits on Aug 15, 2018

Add Printer protocol for testability
Jim Hildensperger
committed