- add models for transport and applications handlers and linked data
- split models into separate file
- some type hints
- some documentation comments
- add actions to prepare confirmation, useful to do initial parsing of all contents
- application arg/kwargs and some transport data can be initialised during Jingle
`initiate` call, this is notably useful when a call is made with transport data (this is
the call for A/V calls where codecs and ICE candidate can be specified when starting a
call)
- session data can be specified during Jingle `initiate` call
- new `store_in_session` argument in `_parse_elements`, which can be used to avoid
race-condition when a context element (<decription> or <transport>) is being parsed for
an action while an other action happens (like `transport-info`)
- don't sed `sid` in `transport_elt` during a `transport-info` action anymore in
`build_action`: this is specific to Jingle File Transfer and has been moved there
rel 419
9141922d57