v2.0.0

Removed nest_asyncio dependency from library, now only used in jupyter notebook. Now Watcher class creates its own event loop and all library coroutines run in it. nest_asyncio is still necessary to run in jupyter notebooks. Rewrote most methods to remove asyncio.run, they're now replaced by self.loop.run_until_complete or self.loop.create_task. Implemented .wait(time) to replace asyncio.run(asyncio.sleep(time)) and .cleanup() method for closing websockets, ssh and cancelling all tasks. Also upgraded websockets. + Many minor fixes

Full Changelog: v1.0.2...v2.0.0