Updated changelog.

Author: hcpchris

CHANGES.rst

@@ -4,6 +4,10 @@ Release 1.3.0
 * **ENHANCEMENT:** Modified the way that data points are serialized to JavaScript literal objects. Now, they are serialized to a JavaScript array if their configured properties are those that Highcharts (JS) supports in JavaScript array notation. Otherwise, the code falls back to serialize the data point as a JavaScript object literal. This change is intended to improve performance and reduce the size of the serialized data. (#25)
 * **ENHANCEMENT:** Added ``__repr__()`` method for Highcharts Core for Python classes.
 * **ENHANCEMENT:** Added ``__str__()`` method with special handling for difficult-to-read classes.
+* **ENHANCEMENT:** Added ``Chart.get_script_tags()`` to retrieve Javascript ``<script>`` tags.
+* **ENHANCEMENT:** Added ``utility_functions.to_snake_case()`` function.
+* **BUGFIX:** Fixed incorrect serialization of datetime and Pandas ``Timestamp`` objects in ``.to_dict()`` and ``.to_json()``.
+* **BUGFIX:** Fixed incorrect serialization of ``EnforcedNull`` in ``.to_dict()`` and ``.to_json()``.
 
 
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