- in Milling Plugin made sure the preprocessors that have the `laser_z` in the name (case insensitive) have the ability to change the Z height at the end of the job (through End_Z parameter)
- make sure that the laser postprocessor that do move on the Z axis (like 'GRBL_laser_Z') accept negative values for the Z focus
- fixed issue in highlighter such that the keywords that have an underscore included are highlighted
- rearranged the default keywords
- fixed the generatecncjob() method default parameters to reflect new data structure names
- in Geometry object the default self.options dictionary is updated with keys that reflect new data structure
- fixed the issue with factory_defaults being saved every time the app start
- fixed the preferences not being saved to a file when the Save button is pressed in Edit -> Preferences
- fixed and updated the Transform Tools in the Editors
