chore(package): update typings to version 1.4.0
chore(package): update typings to version 1.4.0

https://greenkeeper.io/
redux-observable/redux-observable,jesinity/redux-observable,jesinity/redux-observable,jesinity/redux-observable,redux-observable/redux-observable,redux-observable/redux-observable,blesh/redux-observable,blesh/redux-observable