Re: Initial release notes created for 9.6

<listitem>
<!--
2015-11-06 [a76ef15d9] Add sort support routine for the UUID data type.
2016-02-03 [b47b4dbf6] Extend sortsupport for text to more opclasses.
2016-02-17 [f1f5ec1ef] Reuse abbreviated keys in ordered [set] aggregates.
-->
<para>
Speed up sorting of <type>uuid</>, <type>bytea</>,
and <type>char(n)</> fields by using <quote>abbreviated</> keys
(Peter Geoghegan)
</para>

<para>
Support for abbreviated keys has also been added to the non-default
operator classes <literal>text_pattern_ops</>,
<literal>varchar_pattern_ops</>, and <literal>bpchar_pattern_ops</>.
Processing of ordered-set aggregates can also now exploit
abbreviated keys.
</para>
</listitem>

Is it really sensible to group f1f5ec1ef together with the others? I
think that one should be its own entry.

--
Álvaro Herrera http://www.2ndQuadrant.com/
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