Upgrade

Note:
This release requires to update ZEsarUX to 10.3 and dezogif to 2.1.0.

Changes:

• ZEsarUX:
  • Support for ZEsarUX version 10.3
  • Closes all ZEsarUX menus (close-all-menus) when a debug session starts
• Improvements in disconnection handling.
• launch.json: 'loadObjs' 'start' also supports labels.
• ZXNext: Requires now dezogif v2.2.0. Older versions not supported anymore.
• Exchanged aduh95 with node-graphviz library.