Alpha 169

• Docking: handle additional opened windows when main window is docked.
• Serial: fixed parity settings on Windows
• Settings: added an UI setting for terminal.linePadding
• Settings: added an UI setting for terminal.scrollbackLines
• Settings: added an UI switch for the --disable-gpu CLI option
• SSH: support for unencrypted PuTTY v3 keys
• Terminal: added support for OSC 4/10/11/2 which enables programs to set and report colors within the terminal (via xterm)
• UI: fixed terminal toolbar padding with tabs on top on macOS
• Windows: detect PowerShell installed through Microsoft Store
• Zmodem: use actual POSIX file mode when uploading