Increase version number

nifty4/version.py

@@ -3,7 +3,8 @@
 # 2) we can import it in setup.py for the same reason
 # 3) we can import it into your module module
 
-__version__ = '3.9.0'
+__version__ = '4.0.0'
+
 
 def gitversion():
     try:

setup.py

@@ -18,6 +18,7 @@
 
 from setuptools import setup, find_packages
 
+
 def write_version():
     import subprocess
     p = subprocess.Popen(["git", "describe", "--dirty"],
@@ -26,6 +27,7 @@ def write_version():
     with open("nifty4/git_version.py", "w") as file:
         file.write('gitversion = "{}"\n'.format(res))
 
+
 write_version()
 exec(open('nifty4/version.py').read())