Translations:Release notes 0.19/78/en

The introduction of "App::Link" also brought some improvements to the Expressions capabilities of FreeCAD, which are visible in the Property editor, and the Spreadsheet Workbench. These are described in Core-Changes.
 * A new expression syntax is introduced to unambiguously reference a property of the owner object, by omitting the object reference and starting with a leading dot, similar to Python relative import syntax. So instead of , now you can use.
 * You can refer to an object by its or by its . In the case of a, it must be enclosed in  and  symbols, such as . For example,.
 * Improved spreadsheet recomputation logic, and cell copy and paste functions.