flux-standard-action dependency not necessary

[someok]

handleAction use flux-standard-action method isError

import { isError } from 'flux-standard-action';

the method is simple, but it will import some lodash method when compile by webpack.

function isError(action) {
  return action.error === true;
}

I suggest remove the flux dep for descrease the compilse file size.

[madbonkey]

I think the purpose here is to have the actual logic that decides whether an action is an error in the flux-standard-action repository. So if anything ever changes in the flux action standard, say, error: true moves inside the meta key, these checks remain unaffected.

"Go ahead and save yourselves some technical debt" I believe is in one of @gaearon's readmes.

[albertogasparin]

I'm also supporting the removal of the flux-standard-action. It adds several KB of dependencies for no reason. Actually, in createAction.js you are already setting the error prop regardless of the FSA behaviour:

if (args.length === 1 && args[0] instanceof Error) {
  action.error = true;
}

The result is that the lib will be "broken" whenever FSA isError method will change. I think a better approach would be adding some FSA checks in the unit tests, so the build will automatically fail on conventions changes.

[acdlite]

Sounds good to me if you want to submit a PR

[albertogasparin]

PR done #76
Feel free to review and merge (but you should merge #62 first in order to fix master)