Prepare 1.7.2 release

ChangeLog

@@ -2,6 +2,21 @@
 Pylint's ChangeLog
 ------------------
+What's New in Pylint 1.7.2?
+===========================
+
+Release date: 2017-06-03
+
+    * enum34 dependency is forced to be at least version 1.1.3. Fixes spurious
+    bug related to enum classes being falsy in boolean context, which caused
+    _Inconsistent Hierarchy_ `RuntimeError` in `singledispatch` module.
+
+    See links below for details:
+    - http://bugs.python.org/issue26748
+    - https://bitbucket.org/ambv/singledispatch/issues/8/inconsistent-hierarchy-with-enum
+    - https://bitbucket.org/stoneleaf/enum34/commits/da50803651ab644e6fce66ebc85562f1117c344b
+
+
 What's New in Pylint 1.7.1?
 =========================

pylint/__pkginfo__.py

@@ -18,7 +18,7 @@ from setuptools import __version__ as setuptools_version
 modname = distname = 'pylint'
-numversion = (1, 7, 1)
+numversion = (1, 7, 2)
 version = '.'.join([str(num) for num in numversion])
 install_requires = [