Update CHANGES for 23.12 (#3651)

CHANGES

@@ -1,3 +1,44 @@
+# 23.12
+
+  -- solve_cg: avoid use of MF `z` (#3637)
+
+  -- Fix: nosmt OMP Threads Default (#3647)
+     `amrex.omp_threads`: Can Avoid SMT (#3607)
+
+  -- When checking for periodic outs on GPU, copy full particle data (#3646)
+
+  -- MLEBABecLap: Support Robin BC at Domain Boundaries (#3617)
+
+  -- Ascent: SoA Particle Support (#3350)
+
+  -- solve_bicgstab: use fewer MFs (#3635)
+
+  -- solve_bicgstab: cut use of `s` (#3629)
+
+  -- Bug fix for amrex::Subtract when called with interger nghost (#3634)
+
+  -- Fix typo in `MLMGT<MF>::getGradSolution` when `MF` is different from `AMF` (#3631)
+
+  -- SUNDIALS: Use sunrealtype instead of realtype (#3632)
+
+  -- SYCL: Use get_multi_ptr instead of get_pointer (#3630)
+
+  -- Plotfile Tools: GPU support (#3626)
+
+  -- solve_cg: use linop.make instead of MF constructor (#3627)
+
+  -- CArena: shrink_in_place and operator<< (#3621)
+
+  -- solve_bicgstab: use linop.make instead of MF constructor (#3619)
+
+  -- replace AMREX_DEVICE_COMPILE with AMREX_IF_ON_DEVICE and AMREX_IF_ON_HOST (#3591)
+
+  -- [Breaking] Prefix `amrex_` to each plotfile Tool (#3600)
+
+  -- FillRandom: Use MKL host API (#3536)
+
+  -- use hipPointerAttribute_t.type as HIP is removing hipPointerAttribute_t.memoryType (#3610)
+
 # 23.11
 
   -- Give FlashFluxRegisters ways to accumulate data in registers (#3597)