Tag 3.0.0-pre1

Tag 2.2.0

Merge pull request jatoben#57 from jatoben/swift-2016-01-11

Update to Swift 2.2 2016-01-11 snapshot

Merge pull request jatoben#30 from jatoben/travis-xcode7

Re-enable Travis builds

Merge branch 'IngmarStein-master'

Merge pull request jatoben#4 from lancep/master

Another change to the readme