Fixes issue #41
Fixes control commands #42
Reflects changes in celery.inspect.stats #43
Updates changelog
pep8ify
Bumps up version to 0.4.2
Updates the Development Status
added task completion time graph
added distinct time in queue/execution time
shortened url, tidied up long lines, added comment and test case
Fixes favicon.ico
Fixes time formatting test
Merge pull request #48 from hughes/master

Execution time graph
Adds Matt Hughes to authors #48
Adds --max_tasks option to limit the number of tasks in memory
Adds missing abs import
Adds --events_store option to allow saving the collected events
Replaces --events_store option with the pair of --persistent and --db options
Uses shelve module to store events
Use <pre> tag for traceback