* Merge "Highlighter" tab into "SQL" tab again, to keep a low number of tabs
* Divide "Data" options tab into "Data appearance" and "Data editing" tabs, to make room for the new checkbox option "Local number format"
* Introduce the new data option "Local number format"
* Introduce TAppSettings, created in dpr file
* Implement read and write methods, and replace callers of GetRegValue and MainReg.WriteInt/... with these
* Optimize read and write methods for avoiding redundant accesses to registry
* Auto-remove stored default settings from registry to avoid registry spam
* Replace synced MainForm.pref* variables with TAppSettings.Read* calls
* Move SetLocales call to dpr file
* Move MainForm.FDirname* variables to appropriate methods in helpers.pas
* Implement TQueryHistory.Create(SessionPath), reading its items within constructor
* Load in OnBeforePaint, if the tree's tag is set to NOTLOADED
* Load 1,000 rows in one step, up to a maximum of 100,000 rows. Both values are customizable.
* Load next chunk when user presses PageDown on the last node, or, more explicitly, when user clicks "Next rows" button
* Should fix all AVs which seem to be a timing issue with loading data on demand.
* Fixes issue #1675, fixes issue #1580, fixes issue #1721, fixes issue #1734, fixes issue #972
* Sanitize main unit from unused variables
* Move global variables to public scope
* Bring public vars into some reasonable order
* Move constants to const.inc, unless dependent from some used VCL unit
* 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.
* Collect all relevant controls of one query tab and its variables in a new object
* Collect these tab objects into a TObjectList
* Fixes mixed up QueryMemoLineBreakStyle variable - was used for all tabs, now part of the above mentioned object
* Same goes for minor remembering of selected tab on queryhelpers list
* Use filenames on tabs if saved or loaded.
* On tab close ask if content should be saved.
