Start on 0.16.4.

NEWS

@@ -1,3 +1,5 @@
+0.16.4	UNRELEASED
+
 0.16.3	2016-01-14
 
  TEST FIXES

dulwich/__init__.py

@@ -22,4 +22,4 @@
 
 """Python implementation of the Git file formats and protocols."""
 
-__version__ = (0, 16, 3)
+__version__ = (0, 16, 4)

setup.py

@@ -9,7 +9,7 @@ except ImportError:
     from distutils.core import setup, Extension
 from distutils.core import Distribution
 
-dulwich_version_string = '0.16.3'
+dulwich_version_string = '0.16.4'
 
 include_dirs = []
 # Windows MSVC support