Add failing test to illustrate that state:enter is being emmited for resume cases
Change InteractionMachine.switch_state() to not fire enter events in resume cases
Change the default config retrieval to parse data as JSON.
Delete needs to happen after user reset in InteractionMachine.switch_state()
Add is_json to dummy config store.
Add opts which specifies which config keys are JSON.
Add test for opts.is_json.
Merge branch 'feature/issue-175-state-enter-should-only-get-emitted-once' into develop
Rename is_json to json.
Merge branch 'feature/issue-174-support-for-non-json-config-values' into develop
Merge branch 'develop' of github.com:praekelt/vumi-jssandbox-toolkit into develop
Merge branch 'develop' into release/0.2.x
Version 0.2.0 beta.18.