Update to Swift 5.1 and Appid 6.0.0#130

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djones6 wants to merge 4 commits intomasterfrom

Commits on Sep 27, 2019

ci: Update to Swift 5.1
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Commits on Oct 4, 2019

workaround: Use master branch of appid
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Commits on Oct 7, 2019

Disable dev snapshot due to compiler crash
djones6
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Commits on Oct 10, 2019

Update to appid 6.0.0
djones6
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