v0.21.1

• FPU can now be independently controlled at root vs in general using the new AtRoot variants. Default value for StrategyAtRoot is 'same' which means it uses the values from the normal parameters. The reduction parameter has been removed - strategy reduction now uses the value parameter as the reduction amount. NOTE: If you are using a UCI host that remembers settings over restarts (like cutechess) be careful to ensure that when upgrading to this new version you reset settings back to defaults - or you may get a bad combination of fpu settings.
• TempVisitOffset option now allows you to specify values less than -1, and its documentation has been fixed.
• A small performance improvement in movegen.
• Windows packages should include v22 of the Client.