Fix Filehandler bugs & Swift 4 package comment. Groundwork for Async output#32

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iainsmith wants to merge 6 commits intoJohnSundell:masterfrom

iainsmith:master

Commits on Apr 11, 2018

Added `Handle` protocol to get asynchronous output

gwikiera
authored and
iainsmith
committed
Fixed bug with `xcodebuild test`

Grzegorz Wikiera
authored and
iainsmith
committed
Keep standardOuput, standardError & standardInput fileHandles open.

iainsmith
and
SteveBarnegren
committed
Run CI on Linux & OSX against Swift 4.0 & 4.1
iainsmith
committed
Knock swift version down to 4.0
iainsmith
committed

Commits on Apr 13, 2018

Limit the proposed public API
iainsmith
committed