replace isomorphic-fetch dependency by fetch-everywhere

[jpoutrin]

I came across some nasty issue on react native.
here is a solution that was suggested in some other projects.

tests are passing fine.

[buunguyen]

Hi, thanks for the PR. I want to make sure I understand the motivation of the lib change. Did you mean the old lib doesn't support React Native? Or what is the issue?

[jpoutrin]

@buunguyen yes the current does not support react native
the solution was inspired by agraboso/redux-api-middleware#120
the current implementation does not initialize some global variables properly.

[jpoutrin]

@buunguyen please do not merge the change.
The issue seems deeper than that.
I messes up the final react-native bundle for some reason.
it seems to be a webpack bundling issue. (one might not exclude the other).
I am no expert in webpack so this should be put on hold or discarded...

symptoms in my app when debugging:
Failed to print error: regeneratorRuntime.async is not a function

symptoms without:
client.apis is empty

if someone has an idea would appreciate.

sorry for that.

[jpoutrin]

I opened an issue for this:
#1047