Set version to 0.8.0.

dulwich/__init__.py

@@ -23,4 +23,4 @@
 
 from dulwich import (client, protocol, repo, server)
 
-__version__ = (0, 7, 2)
+__version__ = (0, 8, 0)

setup.py

@@ -8,7 +8,7 @@ except ImportError:
     from distutils.core import setup, Extension
 from distutils.core import Distribution
 
-dulwich_version_string = '0.7.2'
+dulwich_version_string = '0.8.0'
 
 include_dirs = []
 # Windows MSVC support