Bump version to 2.2.1

cd89d82f · Tiago de Paula Peixoto · 9178b7d2 · cd89d82f
Commit cd89d82f authored Dec 14, 2009 by Tiago de Paula Peixoto
--- a/configure.ac
+++ b/configure.ac
@@ -5,7 +5,7 @@ dnl An odd micro number indicates in-progress development.
 dnl An even micro number indicates a released version.
 m4_define(graph_tool_version_major, 2)
 m4_define(graph_tool_version_minor, 2)
-m4_define(graph_tool_version_micro, 1dev)
+m4_define(graph_tool_version_micro, 1)

 AC_INIT([graph-tool],
        [graph_tool_version_major().graph_tool_version_minor().graph_tool_version_micro()],