changing how assertions access instance variables to make them non-static-like (#37)

Changing how assertions access instance variables

config-serializer/config-items/MoveMouseMacroAction.ts

@@ -1,12 +1,13 @@
 import {MacroAction, macroActionType, MacroActionId} from './MacroAction';
 import {UhkBuffer} from '../UhkBuffer';
+import {assertInt16} from '../assert';
 
 export class MoveMouseMacroAction extends MacroAction {
 
-    // @assertInt16
+    @assertInt16
     x: number;
 
-    // @assertInt16
+    @assertInt16
     y: number;
 
     _fromJsObject(jsObject: any): MoveMouseMacroAction {