Combo of various parameter tweaks.

[Vizvezdenec]

Passed STC
https://tests.stockfishchess.org/tests/view/6147deab3733d0e0dd9f313d
LLR: 2.94 (-2.94,2.94) <-0.50,2.50>
Total: 45488 W: 11691 L: 11450 D: 22347
Ptnml(0-2): 145, 5208, 11824, 5395, 172
Passed LTC
https://tests.stockfishchess.org/tests/view/6147f1d53733d0e0dd9f3141
LLR: 2.94 (-2.94,2.94) <0.50,3.50>
Total: 62520 W: 15808 L: 15482 D: 31230
Ptnml(0-2): 43, 6439, 17960, 6785, 33
Combination of parameter tweaks in search, evaluation and time management.
Original patches by @snicolet @xoto10 @lonfom169 and me.
Includes:

1. Use bigger grain of positional evaluation more frequently (up to 1 exchange difference in non-pawn-material);
2. More extra time according to increment;
3. Increase margin for singular extensions;
4. Do more aggresive parent node futility pruning.
   bench 5575265

[FauziAkram]

Congratulations!
Well done!
By the way since in the combo there is also a change in the time management, do you think it needs some extra tests in some other time controls?

[Vizvezdenec]

I'll leave it to maintainers to decide. Personally I don't really think so mainly because previous change of this sort passed all non-regression tests quite easily.

[xoto10]

I wondered this, but I think the question is what would we test? Sudden death shouldn't be affected because there's no increment, and tcec-style tc will have much less change than fishtest since the increment is 1/10 of the size. So maybe no other tests required.

[Vizvezdenec]

Don't forget the more you test the bigger probability of false-negative result :)

[xoto10]

And there's that as well, you've convinced me! :-)