Swift package manager

[RockLobster]

Adding support for the swift package manager

[chrisballinger]

@RockLobster Thanks! Can you add a swift build step to the .travis.yml?

[RockLobster]

Good one, will do!

[chrisballinger]

Looks like the tests might need to be updated:

❌ /Users/travis/build/robbiehanson/CocoaAsyncSocket/Tests/Shared/SwiftTests.swift:164:38: overlapping accesses to 'addr', but modification requires exclusive access; consider copying to a local variable
742
743 withUnsafeMutablePointer(to: &addr) {

[RockLobster]

Yeah, it seems that the tests don’t run on Xcode 11 and the old CI was still run on Xcode 9.
I’ll see what I can do

[chrisballinger]

@RockLobster Thank you for looking into it!

[RockLobster]

I now also added the shared unit tests to SPM, did increase the size of the PR slightly, though.

Main reason for the size increase is because SPM does not support targets that mix and match between objc and swift.
By putting the swift and objc test code into separate directories that can be easily solved by using two separate test targets.

[chrisballinger]

@RockLobster Awesome job, thank you!