Prepare 1.6.1.

ChangeLog

@@ -2,6 +2,14 @@
 Pylint NEWS
 -----------
+What's new in Pylint 1.6.1?
+===========================
+
+Release date: 2016-07-07
+
+    * Use environment markers for supporting conditional dependencies.
+
+
 What's New in Pylint 1.6.0?
 ===========================

pylint/__pkginfo__.py

@@ -10,7 +10,7 @@ from os.path import join
 modname = distname = 'pylint'
-numversion = (1, 6, 0)
+numversion = (1, 6, 1)
 version = '.'.join([str(num) for num in numversion])
 install_requires = [