add change log entry for pr #216 and update change log for 1.5.0 release

CHANGES.rst

@@ -1,4 +1,4 @@
-1.5.0 (unreleased)
+1.5.1 (unreleased)
 ------------------
 
 New Features
@@ -10,6 +10,24 @@ API Changes
 Bug Fixes
 ^^^^^^^^^
 
+Other changes
+^^^^^^^^^^^^^
+
+1.5.0 (2024-01-16)
+------------------
+
+New Features
+^^^^^^^^^^^^
+- Added the ``mask_treatment`` parameter to Background, Trace, and Boxcar Extract
+  operations to handle non-finite data and boolean masks. Choice of ``filter``,
+  ``omit``, or ``zero-fill``. [#216]
+
+API Changes
+^^^^^^^^^^^
+
+Bug Fixes
+^^^^^^^^^
+
 - Fixed Astropy v7.0 incompatibility bug in ``tracing.FitTrace``: changed to use
   ``astropy.modeling.fitting.DogBoxLSQFitter`` when fitting a Gaussian peak model instead of
   ``astropy.modeling.fitting.LevMarLSQFitter`` that may be deprecated in the future. Also