New branch fixing errors resulting from move to Xcode 6 Beta 5. However, something is causing the plugin to immediately crash.
Reduced to simplest form of KeyboardViewController that does not immediately crash. Upon the addition of properties that require custom initializers, crashing occurs again.
Isolated error to init methods.
Used new class protocol definitions to make delegate properties weak.
Got the keyboard running for Xcode 6 beta 5.
Merge pull request #4 from Kamaros/beta5

Beta5