Update change log for release 2.0.0

CHANGES.rst

@@ -4,6 +4,22 @@
 Release Notes
 =============
 
+2.0.0 (2024-10-24)
+==================
+
+- Backward incompatible major re-design of API. Backward compatibility was
+  maintained with JWST and Roman pipelines only. [#134]
+
+- Deprecated module ``util``. New software should not import from this
+  module as it will be removed in a future release. [#134]
+
+- Bug fix: exposure time was undefined when in_units were not cps. [#134]
+
+- BUG FIX: ``cdrizzle.tdriz`` signature was out of date. [#134]
+
+- Removed support for the ``'tophat'`` kernel. [#134]
+
+
 1.15.3 (2024-08-19)
 ===================
 
@@ -18,18 +34,6 @@ Release Notes
 - build wheels with Numpy 2.0 release candidate [#149]
 
 
-2.0.0 (Unreleased)
-==================
-
-- Backward incompatible major re-design of API. [#134]
-
-- Bug fix: exposure time was undefined when in_units were not cps. [#134]
-
-- BUG FIX: ``cdrizzle.tdriz`` signature was out of date. [#134]
-
-- Removed support for the ``'tophat'`` kernel. [#134]
-
-
 1.15.1 (2024-03-05)
 ===================