Include JDK 8 in CI compilation in addition to 7 (current implicit default).
Error if the same view ID is injected twice on the same class.
Support Multiple Listeners To a Single View
Forbid multiple listeners with return value for the same view
Merge pull request #181 from tomxor/iss143

Support Multiple Listeners To a Single View
Merge pull request #177 from tomxor/iss171

Error if the same view ID is injected twice on the same class.
Support bindinglListeners to root view without an ID