Add change notes

Author: lcartey

change_notes/2023-10-25-a0-1-1.md

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+ * `A0-1-1` - address a number of false positive issues:
+   * Exclude compiler-generated variables, such as those generated for range-based for loops.
+   * Exclude variables in uninstantiated templates, for which we have no precise data on uses.
+   * Deviations can now be applied to the useless assignment as well as the variable itself.