migrated to swift 4.2 and one bug fix on screenshot#1

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saiedkia wants to merge 4 commits intoDevlinBlankert:masterfrom

saiedkia:master

Commits on May 17, 2019

migrated to swift 4.2
saiedkia
committed

Commits on May 18, 2019

Commits on May 19, 2019

bugfix: screenshot doesnt work as expected
saiedkia
committed