Convert test_circusctl.py to asynchronous style
Merge branch 'async_experiment' of https://github.com/thefab/circus into async_experiment
Poll for arbiter start in test_add_start
Change runner test to use start_arbiter
Fix tests based on _run_circus
Revert "Fix tests based on _run_circus"

This reverts commit 5dc0b349581363a9f719a386cc13c8164dd03091.
Fix sighandler test
Fix watchdog plugin test
Remove duplicate run_plugin function
Extract asynchronous plugin runner
Merge pull request #4 from amarandon/async_experiment

Fix tests