Drop versioning mechanism in favour of executing all query at startup to
improve backward compatibility

    Include unistd.h as getpid is defined there

Add logs to enterForeground()/enterBackground() and let all accounts be refreshed when entering foreground.

    Make case insesitive comparison of two objects of type ConferenceId

    As address comparison is case insensitive as far as the parameters are
    concerned (https://www.rfc-editor.org/rfc/rfc3261#section-19.1.4),
    retrieve all conference infos from the database in order to properly
    link a call log to a conference info

Use the contact address of the call to be transfered instead of the To-header as detailed in the example of section 7.3 of RFC5589: https://www.rfc-editor.org/rfc/rfc5589#page-24

Improve chat message logs when they are waiting for a notify full state to be sent

Fix issue where the remote payload type numbering is not used when the SDP answerer decides to use its own numbering. This happens frequently with telephone-event on PSTN gateways.

Do not attempt to store Account or AuthInfo when the LinphoneConfig cannot write anything. This is useless, but costs a lot of CPU processing.

Optimize socket integration into belle-sip main loop, when used by liblinphone through linphone_core_iterate(). This improves files download speed.

 Do not send the device's joining time if it has not been set and add test to verify behaviour of the Core when handling a secure call with Replaces header

Add background task to protect Core startup on Android, and fix a potential bad call state transition in case of duplicated calls.

vector

Fix an issue where SDP has wrong connectivity type (ipv6, ipv4) when restarting an INVITE after a network disconnection in early stage of a call.
Fix iOS SDK with tunnel.

    transfer_message_upload_cancelled to avoid it to be dealt with in the
    following test

Detect video codecs hardware-accelerated only on Mac OS. Software ones are not usable for real-time encoding. As a side effect, HEVC is no longer available for M1/M2 processors in x86_64 emulation.