0.9.6

Add setting the DRO font size in the ini file
Fix touch screen plot options saving
Fix plot options start up state
Fix MDI command with no spindle control buttons
Fix spindle logic
Fix spindle slower
Sync plot options to defaults if not set in preference file
Fix plot options at startup
Add ladder editor button
Add classic ladder example configuration
Increase recent files to 10
Set plotter states from checkboxes on startup
Add feed and speed calculator