DOC: Changelog

CHANGELOG.rst

@@ -2,8 +2,30 @@
 ======================
 
 
-0.20.0 (Monday 6th May 2019)
-----------------------------
+0.20.0 (Tuesday 7th May 2019)
+-----------------------------
+
+
+Added
+^^^^^
+
+
+* The :func:`.isSparse` and :func:`.removeIfSparse` functions accept
+  a new option, ``mincat``, which allows a categorical to be deemed sparse
+  if the size of its smallest category is below a given threshold.
+
+
+Changed
+^^^^^^^
+
+
+* The ``absolute`` parameter to the :func:`.isSparse` and
+  :func:`.removeIfSparse` functions is deprecated. Instead, they now accept
+  ``abspres`` and ``abscat`` arguments, allowing the
+  absoluteness/proportionality of the ``minpres`` and ``mincat``/``maxcat``
+  options to be specified separately.
+* Changed default processing rules so that ICD10 variables undergo a slightly
+  different sparsity test.
 
 
 Fixed