Add release template to HISTORY.rst
History
-------
+1.6.0 (????-??-??) ???????
+~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+New Features:
+
+* ???
+
+Bug Fixes:
+
+* ???
+
+Other Changes:
+
+* ???
+
+
1.5.1 (2017-02-04) Alfajor
~~~~~~~~~~~~~~~~~~~~~~~~~~
