fix #171 - remove warnings about deprecated hook on react 16.9.0^ - #172

Very nice ;)

Hi! Can this be merged, or is there any other thing to adjust? :)

@Akiyamka hello stranger. i opened a couple of pull requests with rather substantial changes that i personally think greatly improves unistore and was looking for some feedback on. i'm assuming @developit is busy and meanwhile i was hoping to get this feedback from elsewhere. since you have opened a pull request yourself i assume you are familiar with the package and would love to hear what you think about the changes i propose. you can find them at #182 and #183. the second one builds upon the changes from the first.

@developit Any chance this could be merged? :)

For context, my reason for wanting this PR merged is because when using unistore with React Native we get this deprecation warning on every reload.

Screenshot 2020年05月22日 at 14 41 42

@hesselbom ooh, that's quite the intrusive warning. I'll try to get this merged and cut a release today.

@developit it was very simple to rewrite the react integration to use hooks instead and the size shrunk considerably. i have a WIP at #186

Published as 3.5.2.