Fixes and enhancements

• Improved performance when tagging DWG files using the Tag individually tool to drag a rectangle around objects. This also improves performance for the Remover tool when dragging a rectangle around objects, as well as selecting objects using the Lasso select tool.
• Fixed issue with Schemes that could cause a crash when applying them to Architectural walls.
• Fixed issue with Rectangle select and selecting an Unknown object that could cause a crash.
• Fixed problem with Schemes and switching between multiple drawings that could cause a warning to pop up about being unable to open the scheme file.
• Fixed problem with multiple drawings and schemes that could cause multiple dialogs to appear, prompting you to save your schemes.
• Fixed problem with Product lighting when used with Outline overlay or Ghost rendering, that would result in images that were too dark.
• Fixed problem with the Fluorescent light fixture that would fail to hide the lamps themselves in rendered images, when the Show in 3D photo option was turned off.
• Fixed problem with glass materials that would cause overly strong distortions of objects on the other side of the glass when rendering images.
• Fixed problem with the Black and white add-on in Paper View, that could cause DWG files to show in the View Clip, even though the DWG was set to not show in 2D.
• Fixed problem with View Clips and Alternatives that could make it impossible to edit a View Clip after the alternative it was looking at was removed.
• Fixed problem with SketchUp export that could cause it to not respect currently active Filters when generating the model graphics.
• Fixed problem with the Baseline Dimension tool that could cause it to lose its reference to the Baseline when reloading sections.
• Fixed problem with text boxes not automatically expanding when multiple lines of texts are inserted.
• Fixed problem with memory leaks caused by loading the same DWG file multiple times in a single CET session.