remove path constraint and some fix

1.3.1

- added: button to remove follow path constraint

OP_setup_curve_a_to_b.py

@@ -61,6 +61,9 @@ class AW_OT_create_a_b_step(bpy.types.Operator):
         a = markers[0].location
         b = markers[1].location - a # remove a postion to get position in curve object space
 
+        a_frame = int(markers[0].name.split('_')[-1])
+        b_frame = int(markers[1].name.split('_')[-1])
+
         # Set the curve and constraint
         curve = fn.generate_curve(location=a, direction=b, name='curve_path', context=context)
         settings = context.scene.anim_cycle_settings
@@ -72,9 +75,14 @@ class AW_OT_create_a_b_step(bpy.types.Operator):
 
         # set offset animation ??? (but movement not in sync until action is retimed in NLA)
 
-        # remove all markers or keep for later reuse ?
+        ## remove all markers or keep for later reuse ?
         remove_spacetime_keys(context=None)
+        
         # if speed calculation is done later need to know start and end frame...
+
+        # Set frame start and end
+        settings.start_frame = a_frame
+        settings.end_frame = b_frame
         return {"FINISHED"}
 
 class AW_OT_remove_a_b_step(bpy.types.Operator):