update chagnes and release

Author: acmorrow

CHANGES.txt

@@ -68,6 +68,9 @@ RELEASE  VERSION/DATE TO BE FILLED IN LATER
     - CacheDir writes no longer happen within the taskmaster critical section,
       and therefore can run in parallel with both other CacheDir writes and the
       taskmaster DAG walk.
+    - The NewParallel scheduler now only adds threads as new work requiring execution
+      is discovered, up to the limit set by -j. This should reduce resource utilization
+      when the achievable parallelism in the DAG is less than the -j limit.
 
   From Mats Wichmann:
     - Add support for Python 3.13 (as of alpha 2). So far only affects

RELEASE.txt

@@ -67,6 +67,9 @@ IMPROVEMENTS
         (Larger -j values)
 - CacheDir writes no longer happen within the taskmaster critical section, and therefore
   can run in parallel with both other CacheDir writes and the taskmaster DAG walk.
+- The NewParallel scheduler now only adds threads as new work requiring execution
+  is discovered, up to the limit set by -j. This should reduce resource utilization
+  when the achievable parallelism in the DAG is less than the -j limit.
 
 
 PACKAGING