Update changelog
diff --git a/NEWS.rst b/NEWS.rst
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--- a/NEWS.rst
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@@ -1,3 +1,12 @@
+- [otConverters] Implemented ``__add__`` and ``__radd__`` methods on
+ ``otConverters._LazyList`` that decompile a lazy list before adding
+ it to another list or ``_LazyList`` instance. Fixes an ``AttributeError``
+ in the ``subset`` module when attempting to sum ``_LazyList`` objects
+ (6ef48bd2, 1aef1683).
+- [AAT] Support the `opbd` table with optical bounds (a47f6588).
+- [AAT] Support `prop` table with glyph properties (d05617b4).
+
+
3.15.0 (released 2017-08-17)
----------------------------
