Tarrasch V3.13a

• Change default database from defunct kingbase-lite to tarrasch-base
• Change default engine from Stockfish 8 to 11
• Tarrasch will update a default configuration to new default engine and database (conservatively). Previously Tarrasch's respect for current settings was universal which meant new default engine/databases were ignored without user interaction.
• Update Komodo in standard distribution to Komodo 12
• Add Sargon 1978 (another one of my projects) to engines in standard distribution.
• Vastly speed up copy/cut of individual games by using GetNextItem() instead of GetItemState() for all games to find selected games
• Introduce new Tournament Pairings feature into PGN Dialog
• Introduce restricted databases, cannot export more than 10,000 games at a time to PGN
• Fix longstanding, serious crash bug. Tarrasch was unable to cope with PGN files it was using being modified "behind its back"
• Tarrasch now accepts '=' as optional in promotion notation, so a8Q is accepted as well as a8=Q
• In database creation, dup game detection now requires a YYYY match - if YYYY isn't present and matching, then games aren't counted as dups
• Prevent possible race condition when changing databases before current database has finished loading
• Update credits, mentioning relationship between Mark Crowther and TWIC and tarrasch-base
• In all game dialogs, disable buttons that operate on games, if the dialog is empty (has no games)
• Change from default 9 files in MRU (recent files) menu to 20
• Fix a bug introduced in previous release that the initial database game dialog could be be slightly scrolled, with highlighted game in position zero not showing.
• Add tooltip help to player search facility, to make it slightly more discoverable / easy to use
• Make Game Board orientation (i.e. White or Black at the bottom) a per tab attribute