* [clients]: use request timeout by-default

* add timeout for notif

* more feature flag mess

* rexport tokio types

* Update ws-client/src/client.rs

Co-authored-by: Maciej Hirsz <[email protected]>

* Impose a timeout on all requests

Variant of #367

This PR takes a more opinionated stance than #367, where timeouts are optional. In this PR I suggest we make a all requests use a timeout and only let users choose the length.

* fmt

* Address review grumbles

* fmt

* Use tokio::select! for cleaner code

Co-authored-by: Niklas Adolfsson <[email protected]>
Co-authored-by: Maciej Hirsz <[email protected]>
Co-authored-by: Maciej Hirsz <[email protected]>

* Stick test code to a single runtime

* Replace async-std in ws-client with tokio

* Replace std::thread::sleep with tokio::time::sleep in test

* Add compatibility layer for tokio v0.2

* Add check for both features being enabled + some improvements

* Update ws-client/src/tokio.rs

Co-authored-by: Niklas Adolfsson <[email protected]>