Merge pull request #11 from higucheese/bugfix

Avoid 100% CPU on asyncio.sleep(0)

Author: mwcraig

CONTRIBUTORS.md

@@ -18,6 +18,7 @@ issues, offering improvements to the documentation or contributing code.
 We are certain the list is incomplete; please let one of us know by opening an [issue on GitHub](https://github.com/BruceSherwood/vpython-jupyter/issues) and we will be happy to add your name!
 
 + Wayne Decatur (@fomightez)
++ Tomokazu Higuchi (@higucheese)
 + Antti Kaihola (@akaihola)
 + Patrick Melanson (@pmelanson)
 + Gopal Sharma (@Hippogriff)

vpython/with_notebook.py

@@ -162,7 +162,7 @@ async def wsperiodic():
                 msg = {'content': {'data': [m]}}
                 baseObj.glow.handle_msg(msg)
 
-        await asyncio.sleep(0)
+        await asyncio.sleep(0.1)
 
 loop = asyncio.get_event_loop()
 loop.create_task(wsperiodic())