Hotfix for Swift 3.2 support

This release introduces:

• Minor code update to enable compilation under Swift 3.2 (see following comment)

API breaking changes

• none

Bugfixes

• none

Swift 4, iOS 11 support

This release introduces:

• Swift 4 support
• iOS 11 support

API breaking changes

• Minimum deployment version set to 9.0
• Removed Swift 3 @objc inference

Bugfixes

• Fixed issue #31

3.0.1

Update version

2.0.1

• Fix crash #17
• Remove cocoapods from the Example app