rename $args to $render_args
remove extract() usage in _p2p_get_list()
remove extract() from p2p_get_connections()
add separate tests for P2P_List
remove extract() from P2P_List::render()
remove extract() from _p2p_get_connections()
remove extract() from p2p_create_direction()
Merge pull request #308 from scribu/no-extract

Stop using extract() so much