Quick TM Fix

Flags when low time and long (3s+) increment

Fixed time management for games with increment

There was an issue where the engine would have trouble allocating time, if the time control
had say, 5 or more seconds of increment. It is now changed so that increment is included within
the allocation algorithm.
Test games have also been run to establish the new rating of the engine: 2318 CCRL.

Added delta pruning

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