- Highlight differences in the last received message with a "diff" view
- Magnify app content with "Ctrl +", "Ctrl -", "Ctrl 0"
- Make user interactions more predictable by removing "select topic on mouse over"
- Add "Quick Preview" setting, to enable topic selection on mouse over
- Add JSON formatter
- Show error when connection to the mqtt broker is lost
- Fix bug where mqtt explorer resets the tree after a reconnect
- Fix MQTT-Client id