Adding changelog fragment.

spacetelescope · Oct 9, 2024 · 218d6dc · 218d6dc
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+Preparing ramp fitting for the upgrade to python 3.13.  In python 3.13, the C-API
+function ``PyLong_AsLong`` raises an exception if the object passed to it is
+``NoneType``.  There are two integer attributes for the ``RampData`` class that
+can be ``NoneType``, so a check for ``NoneType`` for these attributes was added.