Fixed KiCad project reload

- Otherwise KiCad SIGSEGVs when trying to plot

kibot/gs.py

@@ -432,6 +432,8 @@ class GS(object):
         sm = pcbnew.GetSettingsManager()
         sm.UnloadProject(GS.board.GetProject(), False)
         assert sm.LoadProject(pro_name)
+        # If we use the old project KiCad SIGSEGV
+        GS.board = None
 
     @staticmethod
     def get_resource_path(name):

kibot/out_panelize.py

@@ -725,6 +725,9 @@ class PanelizeOptions(VariantOptions):
         board = GS.load_board_low_level(name)
         logger.debug('Creating preview image ...')
         out.options.create_image(img_name, board)
+        # KiCad loads the project automagically, so now we have the wrong project loaded
+        # We need to unload the current project to load the new one
+        # But we also need to reload the PCB, this is ridiculous ...
         GS.reload_project(GS.pro_file)
 
     def run(self, output):

kibot/pre_set_text_variables.py

@@ -148,8 +148,5 @@ class Set_Text_Variables(BasePreFlight):  # noqa: F821
         with open(pro_name, 'wt') as f:
             f.write(json.dumps(data, sort_keys=True, indent=2))
         if GS.board:
-            # Force a project reload
+            # Force a project and PCB reload
             GS.reload_project(pro_name)
-            # TODO: Do we really need to reload the PCB?
-            # Force the PCB reload (will reload the project file)
-            GS.board = None