Fix bug introduced by recent switch_state changes that could allow undefined or unknown state names to be passed into the start state creator (review by @justinvdm).
jshint redeclared var fixes
Merge branch 'develop' of github.com:praekelt/vumi-jssandbox-toolkit into develop
Allow the current inbound message to be retrievable from InteractionMachine
Deep copy the current message when using InteractionMachine.get_msg()
Merge branch 'feature/issue-26-interactionmachine-needs-a-way-of-retrieving-the-current-message' into develop
Add helper_metadata option to ImTester.check_state()