- fixed crash when trying to do a `select all` and there are app Scripts present
- updated the `drillcncjob` Tcl command to make a script exit in case of an error
- Drilling Tool - fixed missing feedrate code when the toolchange is Off
- AppTextEditor - working on syntax highlighting
- App - trying to speed up the new project creation
- Tcl Shell - Browser Edit - added Undo/Redo, Cut and Delete selection
- replace all the exec_() calls with exec() (except one situation in Tcl where I'm not sure of the effect)
- fixed issue in the Excellon Editor where the Space key did not toggle the direction of the array of drills
- combed the application strings all over the app and trimmed them up until those starting with letter 'O'
- updated the translation strings
- fixed the Tcl Command AlignDrillGrid
- fixed the Tcl COmmand Panelize, Excellon panelization section
- Fixed an issue in Tool Calibration export_excellon method call
- PEP8 corrections all over the app
- replaced some icons in the app
- in Code Editor, when changing text, the Save Code button will change color (text and icon) to red and after save it will revert the color to the default one
- in Code Editor some methods rework
- 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
