Update change log for 1.6.2
Changes
=======
+1.6.2 (?)
+---------
+
+- Handle a ``TypeError`` that can occur when geometries are torn down (#473,
+ #528).
+- Splitting a linestring by one of its end points will now succeed instead of
+ failing with a ``ValueError`` (#524, #533).
+
1.6.1 (2017-09-01)
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