move `wapi_cf_delegate` to core as `wapi_delegate`
remove eunit from module
make routing key to be optional
add types, specs
update app version
fix Event-Category/Event-name issues
fix available devices listener
use <<"Call">> instead of <<"Call-Object">>
update pattern-match order
use props module instead of proplists
clear code from unused stuff
use foldl!
fix variable names used only for logging
code-style update
merge onnet & offnet listeners
update logs
restrict call events
use wh_hooks instead of listener process
add voice prompt
drop requests from offnet