Fix swift version to avoid update issues

1.0.1

Fix swift version

Migrate Helix to SPM to better support Xcode10

1.0.0

Merge branch 'release/1.0.0'

Updated files

Merge branch 'release/0.0.7'

# Conflicts:
#	Helix.podspec

Swift 4.2 and deleted demo project

0.0.6

Bump version to 0.0.6

Remove demo project

Merge branch 'release/0.0.5'

# Conflicts:
#	DemoHelix/AppDelegate.swift
#	Helix.xcodeproj/project.pbxproj
#	README.md
#	swift-guidelines.md

Support Swift 4.2

Support for Swift 4.2

* Making InjectedProperty public

* Migration to Swift 4.2

* Increased version and first documentation

* Create LICENSE

* Create README.md