* Rename is_py3 to is_py2 for more logical guard
* Add stubs for missing tests, add few more tests for core modules
* Lint fixes
* Line too long fix
* Remove unnecessary KeyboardInterrupt
* Consistent workflow names
* Update homebrew formulae. Doesnt seems to work now
* test_enable_dashboard and test_enable_events
* test_enable_dashboard and test_enable_events
* Fix problem where empty plugin string was passed as plugin module
* test_enable_devtools and remove redundant guards for None and "" which was there due to a bug
* Go flagless to allow custom user defined flags. Fixes#301
* Add --cache-dir flag for cache plugin (when used with on-disk store)
* Enable discovery of flags from external plugins, example those that reside outside of proxy.py package and loaded on demand. This also allows external flags to surface in --help section
* Define --filtered-client-ips flag for FilterByClientIpPlugin
* Better document acceptor module and add a TCP Echo Server example
* autopep8 formating
* Rename ThreadlessWork --> Work class
* Make initialize, is_inactive and shutdown as optional interface methods.
Also introduce Readables & Writables custom types.
* Move websocket code into its own module
* Add websocket client example
* Cleanup websocket client
Abhinav Singh