Highlighted changes in this version

It's now possible to define an enumeration using the syntax declare enum -> {VAL1, VAL2, ...}
The documentation browser can now be opened again using help window and similar. The necessary time for opening up with this method was greatly reduced.
Empty cells are now preserved, if one converts string columns to logical columns.
Multiple head rows in tables and data files are now much better supported for XLS, XLSX, ODS and CSV
Copying and moving (using copy and move) of mixed-value tables is now possible again.
It's now possible to deactivate the table auto-save by setting the interval to zero
Downloading of zip files now works as expected.
The calculation of needed memory per table and cluster does now reflect better the actually needed memory.
TAB().num now also considers strings as valid values for the num() operation and empty columns are now correctly calculated as empty if used with TAB().cnt.cols
Improved performance when copying a large table out of the table viewer.
Procedures execute now always the latest changes without the need of waiting a few seconds
Plain app names were removed from code and moved to the langauge files (allows also translations of the app name).
Many improvements and fixes

The complete list of changes can be found in the attached ChangesLog.

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