Update CHANGELOG.md

Author: Datseris

CHANGELOG.md

@@ -1,5 +1,7 @@
 # 2.4.1
 * `savename`'s default options now have `sigdigits = 3` instead of `digits = 3` as stated in the documentation string. This was supposed to happen already since 2.0 but did not because of a bug. (#284)
+* Any subtypes of `AbstractDict` now work with DrWatson (#283).
+
 # 2.4.0
 * Add the macro version of `produce_or_load` to enable tagging with the calling source file and line.
 # 2.3.0