Add setting to disable RTP volumes, because implementaitons that do not ignore RTP extension headers they do not support.

Do not do anything if a participant is added twice to a conference in a very short period of time - even before receiving the 200Ok response of the reINVITE

Fix soundcard sampling rate initialisation, fix non-usage of CallParams's Account property for sip routes.

Fix V4Mapped address sometimes advertised in SDP.

- and fix build options to compile only the requested KEMs
- add  missing ZRTP auth string descriptor

    to:
    - store conference information on the device holding the conference
    - correctly set the organizer by looking at the joining mode. If it is
      FocusOwner, the use it
    - Do not default organizer to me participant
    - Set the role of the me participant of a local conference to speaker

do not compile example plugin for iOS

liblinphone:
Correctly set minimum OS version for Apple devices to example plugin

Updated liblinphone & mediastreamer2 to fix an issue with OpenSLES on Android + prevent crash in PhoneStateListener

- Refactor account creator utility functions
- Migrate account creator random username and password generators from C to C++

Take into account bandwidth consumed by non-controlled streams (such as audio) for creating TMMBR requests for controlled streams. This should improve quality for medium bandwidth internet connections by avoiding a risk of congestion.

    Do not attempt to update contact address if the call session doesn't have an op associated to

[Belle SIP]
    Skip CRLF at the start of a NOTIFY body

    https://www.w3.org/Protocols/rfc1341/7_2_Multipart.html

    "The requirement that the encapsulation boundary begins with a CRLF
    implies that the body of a multipart entity must itself begin with a
    CRLF before the first encapsulation line -- that is, if the "preamble"
    area is not used, the entity headers must be followed by TWO CRLFs. This
    is indeed how such entities should be composed. A tolerant mail reading
    program, however, may interpret a body of type multipart that begins
    with an encapsulation line NOT initiated by a CRLF as also being an
    encapsulation boundary, but a compliant mail sending program must not
    generate such entities."

API for controlling remote push notifications parameter pn-call-remote-push-interval (Context iOS/Linhome)

Fix spurious re-INVTE after accepting a call that was disconnected during IncomingReceived state. Fix crash on iOS because of ToneManager busy with end tone of a past call while accepting a new incoming call.