Move to Swift Package Manager (#30)

* update to RxSwift 6.2.0 consistently
* update versions in podspec

* make DataInputStreamTests build in swift 5
* add Package.swift for spm support

* use swift test to run tests
* mention spm in readme
* mention Multicast Networking Entitlement

* use spm from Example app

* remove xcodeproj files for libraries they can be build opening Package.swift
* update readme

* set TEST=1 when running swift test on travis
* show swift version when building/running tests on travis
* update xcode version for travis builds to 12.5

.travis.yml

@@ -3,9 +3,9 @@ language: objective-c
 os:
     - osx
 dist: trusty
-osx_image: xcode12.4
+osx_image: xcode12.5
 
 script:
     - xcodebuild -version;
       xcodebuild -showsdks;
-      travis_wait 60 ./run_tests.sh;
+      ./run_tests.sh;

Cartfile

@@ -1 +1 @@
-github "ReactiveX/RxSwift" "6.1.0"
+github "ReactiveX/RxSwift" "6.2.0"

LifxDomain.podspec

@@ -1,6 +1,6 @@
 Pod::Spec.new do |s|
   s.name         = "LifxDomain"
-  s.version      = "0.0.1"
+  s.version      = "0.0.3"
 
   s.summary      = "LIFX Message definition and (de)serialization code for integration with your own code. Has no external dependencies."
   s.description  = <<-DESC