Bump version to a pre-release (for clarity).

Author: GraylinKim

sc2reader/__init__.py

@@ -20,7 +20,7 @@
 """
 from __future__ import absolute_import, print_function, unicode_literals, division
 
-__version__ = "0.6.4"
+__version__ = "0.7.0-pre"
 
 import os
 import sys

setup.py

@@ -4,7 +4,7 @@
 setuptools.setup(
     license="MIT",
     name="sc2reader",
-    version='0.6.4',
+    version='0.7.0-pre',
     keywords=["starcraft 2", "sc2", "replay", "parser"],
     description="Utility for parsing Starcraft II replay files",
     long_description=open("README.rst").read()+"\n\n"+open("CHANGELOG.rst").read(),