added changelog

CHANGELOG.md

@@ -0,0 +1,39 @@
+CURRENT
+=======
+
+* Improved printing of accuracy measures.
+* Added version number.
+* Rewrote the the __main__.py
+
+VERSION 0.0.4
+=============
+
+Date: 15/11/16
+
+Enhancements
+------------
+
+* Added notebooks for comparing and evaluating algorithm performances
+* Better use of setup.py
+* Added a min_support parameter to the similarity measures.
+* Added a min_k parameter to the KNN algorithms.
+* The similarity matrix and baselines are now returned.
+* You can now train on a whole training set without test set.
+* The estimate method can return a tuple with prediction details.
+* Added SVD and SVD++ algorithms.
+* Removed all the x/y vs user/item stuff. That was useless for most algorithms.
+
+
+API Changes
+-----------
+
+* Removed the @property decorator of for many iterators.
+* It's now up to the algorithms to decide if they can or cannot make a
+	prediction.
+
+VERSION 0.0.3
+=============
+
+Date: 25/10/16
+
+* Added support for Python 2