upload new version to npm

[thehobbit85]

can you please publish the new version to npm.
I want to go back and set the dependency to npm and not git ;)

[thehobbit85]

and also I think the version bump should be a major one since the error format has been changed which is a breaking change

[pocesar]

upstream changes coming to JSON RPC server, and the code is being rewritten in Typescript and ES7+