Refactor <Notifications /> with hooks

[edumoreira1506]

Related to issue #54

[chitgoks]

is the author still active? this is the best design of notifications i have come across and hopefully these pull requests will be merged. those warning messages take up a huge chunk in the console.

[edumoreira1506]

I don't know if actor is active, but I hope that yes.

[chitgoks]

or you could fork it?

[tjrexer]

I forked this repo and have taken ownership from the original owner in npm. I've published an update to remove the unsafe components. If you would like this to be reviewed, please submit a PR into tjrexer/react-notifications:next.

[chitgoks]

I forked this repo and have taken ownership from the original owner in npm. I've published an update to remove the unsafe components. If you would like this to be reviewed, please submit a PR into tjrexer/react-notifications:next.

thank you for keeping this alive. i tried your new lib. but i still get the same unsafe warnings in dev console. seems there is still one remaining called TransitionGroup.