Fix bug where a new Blender file would remember old pset templates and libraries

src/blenderbim/blenderbim/bim/handler.py

@@ -70,8 +70,7 @@ def purge_module_data():
 
 @persistent
 def loadIfcStore(scene):
-    IfcStore.file = None
+    IfcStore.purge()
-    IfcStore.schema = None
     ifc_file = IfcStore.get_file()
     IfcStore.get_schema()
     [

src/blenderbim/blenderbim/bim/ifc.py

@@ -15,6 +15,19 @@ class IfcStore:
     library_path = ""
     library_file = None
 
+    @staticmethod
+    def purge():
+        IfcStore.path = ""
+        IfcStore.file = None
+        IfcStore.schema = None
+        IfcStore.id_map = {}
+        IfcStore.guid_map = {}
+        IfcStore.edited_objs = set()
+        IfcStore.pset_template_path = ""
+        IfcStore.pset_template_file = None
+        IfcStore.library_path = ""
+        IfcStore.library_file = None
+
     @staticmethod
     def get_file():
         if IfcStore.file is None: