Version 2.2.30

GUI

• Set setuptools to v60.6.0
• Upgrade to pywin32 v303. Ref #3290
• Fix int() call. Ref #3283
• Fix QPoint() as unexpected type 'float'. Fixes #3283
• Fix painter.drawRect() has unexpected type 'float'. Fixes #3282
• Fix SpinBox.setValue() requires integer. Fixes #3281

Server

• Support GNS3 variables in Docker environment variables. Fixes #2033
• Release web UI 2.2.30
• Set setuptools to v60.6.0
• qemu_vm.py Linked node test.
• Fix dead link in README.rst Fixes #2022