- Changed namespace to `AsyncInterop` instead of `Interop\Async`.

Version 0.4.0

Merge pull request #91 from async-interop/disabling_invalid_watcher

Allow disabling of invalid watchers

- Rename `Driver::storeState` to `Driver::setState`

- Rename `Driver::fetchState` to `Driver::getState`
- Convert `Driver` from an interface to an abstract class
- Merge `Registry` into `Driver` as it's now an abstract class
- Add warning about different scopes for `onSignal`

First tagged version of the standard's draft. Implementations can now…

… depend

on it using async-interop/event-loop:^0.1 in their composer.json file.