* Remove workaround for Unicode text to and from clipboard
* Fix writing/reading wrong encoded text into/from registry - no need to use Utf8Encode() any longer
* Implement TMySQLQuery.ColAsAnsi() for cases in which we read binary data.
* Removes TNT Unicode controls, which are no longer required. All VCL controls now have native Unicode support.
* Remove Delphi 11 packages, otherwise we would either need to keep TNT or break Unicode
* PngComponents update from Uwe Raabe on http://cc.embarcadero.com/Item/26127
* Adjust auto build process
* Since Delphi 2009, Strings are now UnicodeStrings, not AnsiStrings any longer. Fix a bunch of compiler errors which came along with this change.
TODO: Project should compile but give tons of compiler warnings.
* Use this chance to add a confirmation dialog when leaving the editors, to ask the user if he wants to save modifications. Fixes issue #1524.
* Also, enhance Mainform.RefreshTreeDB in a way that it does not trigger the OnFocusChange event. Important for the editors when saving changes.
Additionally this implements tabbing through edited fields for all grid editors. And it fixes issue #1266, issue #1267, issue #1253, issue #1178, issue #1155, issue #825 and issue #566 .
* Remove old, unused code (TMysqlIndex, TMysqlField)
* Move relevant code from helpers to mysql_structures unit
* Rename various stuff to more compact names
* Use ordinal values instead of constants for datatypes and their categories
* Replace TGridColumn.IsXYZ boolean's by a new .DatatypeCat property
