GUI
- Upgrade to PyQt5 v5.15.7
- Changed Windows Terminal telnet console profile from OS X to windows ref: issue #3193
Server
- Fix link communication issues on Windows with uBridge
- Fix StreamWriter doesn't have the wait_closed() method in Python3.6. Fixes #2170
- Install built-in appliances when no previous version has been detected. Fixes #2168
- Update documentation to install gns3-server. Fixes #2124
- Give udhcpc executable right. Fixes #2159