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Update SDK version to 19.4
Bug fixes and improvements.

1:improved stability
2:Add French resources

improved stability

improved stability

Fixed the bug with IM presence status.

When the client supports both IPV4 and IPV6, IPV4 is prioritized.
The status feature has been re-implemented. Setting the DND (Do Not Disturb) status will prevent the answering of calls.
Support has been added for sharing recorded audio files and log files.
Fixed the bug causing button flickering when using a Bluetooth headset.
Fixed the bug where the recording prompt tone was not playing completely.
Fixed the bug where the ringback tone was not playing correctly on outgoing calls.

1: Fixed sometimes could not hear voice after answering the call.
2: Fixed inability to hear the voice through Bluetooth.
3: Improved stability.

fixed:sometimes audio call only has one-way voice.

improved stability

improved stability

fixed：
call records missed after update app to version 11.16

fixed:
improved stability

fixed:
improved stability

fixed:
1:Call History missed after update app to 11.12
2:Sometimes App crashes when new message incoming.

fixed:
Sometimes app crashes after scanning the QR code of account
improved stability

fixed:
1 crash when click emotion in chat view.
2 Sometimes the call can not be connected.
3 stability improved

fixed:
the audio record file can not play in App

Optimize call screen
stability improved

improved stability

improved stability

fixed:
1:show wrong extension name when call incoming
2:improved stability

Automatically match PBX contacts.

fixed:
1:crash when click chat image
2:improve stability.

improve stability
do not auto hold when new call incoming