KAZOO-240: move dial into own module
KAZOO-240: hide the message passing by using whapps_call_command:receive_event
KAZOO-240: formatting
KAZOO-240: remove unused logging
KAZOO-240: move some xml functions to the util module
KAZOO-240: typo fix
KAZOO-240: sample simple conference dial
KAZOO-240: pass discovery object along to see if conf config is on the doc
KAZOO-240: handle conferencing in the Dial verb
KAZOO-240: add 'park' command