Update changelog.md

Author: faberga

assembler_tools/hec-assembler-tools/docsrc/changelog.md

@@ -1,28 +1,4 @@
 # Changelog
 
-### 2024-07-11
-- Updated SPAD capacity to reflect change from 64MB to 48MB.
-- Updated the range of values for `cnop` parameters.
-- Updated `rshuffle` to reflect slotting rules for 4KCE.
-
-### 2024-01-23
-- Updated `rshuffle` to reflect latency changes and rules for 4KCE.
-- Updated `nload` to reflect the lack of support for multiple routing tables.
-- Updated HBM capacity to reflect change from 64GB to 48GB.
-- No keygen updates yet because the feature is work in progress.
-
-### 2023-07-25
-- Updated throughput for CInsts `cload`, and `nload`.
-- Updated throughput and latency for `cstore`, and `bload`.
-- Updated latency of `xstore`.
-- Updated `rshuffle` to reflect the discontinuation of `wait_cyc` parameter.
-
-### 2023-07-24
-- Added XInstruction `sub`, required by CKKS scheme P-ISA kernels.
-
-### 2023-06-30
-- Updated latencies of XInstruction `rshuffle` based on Sim0.9 version.
-
-### 2023-06-12
-- XInstruction `exit` op name is now `bexit` to match the ISA spec, as required by Sim0.9.
-- CInstructions `bload` and `bones` format changed to match philosophy of dests before sources.
+### 20250523
+- First release of the HERACLES Code Generation Framework (Reference Implementation)