Handle config and instantiate correct class for papa sockets and processes

PapaSocketProxy has a mostly good implementation but PapaProcessProxy is just a wrapper around Process
Fix client test to allow prefix or postfix term characters
For wdir to point to the correct location
Modify Process so it can be a base class and add 'name' as first param
Refactor Redirector to handle both streams
Enhance output classes to use timestamp from data if present
Fix uwsgi_lossless_reload to handle bad data better
Track whether process output is redirected or not
Initial papa process support
Finish basic papa support
Enhance reliability of uwsgi_lossless_reload
Adjust delay if response is float
Better papa logging
Merge branch 'circus-master' into use_papa
Make papa names case insensitive
Update docs to describe Papa
Make flake8 happy
Do not require pyyaml
Use base_port parameter instead of hard coded value
Add design goal info