v0.8.3

Feature/new messages (#871) (#906)
Enhancement of MeetingPanel (#892 )
Enhancement of Meeting module (#901)
Cursor issue in to filed (#886)
Update brand (#902)
Back button refactor (#895)
Add serialize decorator to make serialized operation (#893)
Fix bug Cannot make call with "RingCentral for Desktop" on IE for Windows 7 (#891)
Add shouldcleanupall flag to cleanup all matcher (#894)
Feature/add_auto_call_log_notes_toggle (#903)
3-way-calling modules (#897) (#904) (#899)
Adjust call log section (#909)