- added reinforced window bars
- added a drop-down list for automatic window parts, these will be included when using extend
- overlap replacing now removes any attached window parts
- extend mode now shows the direction foundations will be added
- pillars included in extend mode functionality
- the cannon ball in stability mode now has a large destruction radius, much more entertaining, mouse over and press a remove key to destroy individual parts
- upgraded to Unity 5.6
- enabled GPU instancing, not seeing a huge difference but it might help with larger designs
- low walls now have a number shortcut
- fixed selecting hidden parts with mouse3 rectangle selection