update history for 0.9.0 and 0.9.1

Signed-off-by: Doug Hellmann <doug@doughellmann.com>

Author: dhellmann

doc/source/history.rst

@@ -2,7 +2,7 @@
  Release History
 =================
 
-0.8.1
+0.9.1
 =====
 
 * Fix dependency management in the directive so that directives with
@@ -11,6 +11,14 @@
   <https://github.com/sphinx-contrib/datatemplates/pull/83>`__ for
   details. (contributions by Øyvind Harboe)
 
+0.9.0
+=====
+
+* Fix directive cross-reference management so it works in markdown
+  files. See `PR 82
+  <https://github.com/sphinx-contrib/datatemplates/pull/82>`__ for
+  details. (contributions by Manuel Racle)
+
 0.8.0
 =====