[enh] release 0.6.6

CHANGELOG

 Changelog
 =========
-0.6.6 (unreleased)
+0.6.6 (2017-06-12)
 ------------------
 - fix situation where a deindented comment between a if and elif/else broken
   parsing, see https://github.com/PyCQA/baron/issues/87
-- around 35-40% parsing speed improvment on big files by duncf
+- around 35-40% to 75% parsing speed improvment on big files by duncf
   https://github.com/PyCQA/baron/pull/99
 0.6.5 (2017-01-26)

setup.py

@@ -12,7 +12,7 @@ except ImportError:
 setup(name='baron',
-      version='0.6.5',
+      version='0.6.6',
       description='Full Syntax Tree for python to make writing refactoring code a realist task',
       author='Laurent Peuch',
       long_description=read_md("README.md") + "\n\n" + open("CHANGELOG", "r").read(),