* Gross level area calculation for labels implemented.

* Ceiling thickness can be modified.

* Added setting for door to render it as closed in 3d.

* Fixed error during PDF export.

* Angle between walls can be set.

* Copy/paste implemented for labels, symbols and rooms.

* Fireplace, triangle, single door cabinet and closet added.

* Room subtraction during moving can be disabled in settings.

* Bugs fixed.