Release a version of ng-flow-standalone.js including latest flowjs 2

[evilaliv3]

As we are closing the era of flowjs version 2 with a final stable version it could be worth it to issue a final release for ng-flow standalone including the final version of flowjs 2.

[evilaliv3]

\cc @AidasK: I just opened this ticket to keep track of this possibility. Please let me know what you think and if you could guide me through i could eventually issue the release my self.

Thank you.

[AidasK]

Sure, sounds great. Feel free to release it. IMO ng-flow should be left locked in on 2.x version as angular 1.x is deprecated and not many integrations happens at this stage. We should focus on ngx instead. Though if you want to upgrade it, it's fine, we can do it.