Set stable version number

Author: rhpvorderman

setup.py

@@ -124,7 +124,7 @@ def build_zlib_ng():
 
 setup(
     name="zlib-ng",
-    version="0.5.0-dev",
+    version="0.4.2",
     description="Drop-in replacement for zlib and gzip modules using zlib-ng",
     author="Leiden University Medical Center",
     author_email="r.h.p.vorderman@lumc.nl",  # A placeholder for now

src/zlib_ng/__init__.py

@@ -5,4 +5,4 @@
 # This file is part of python-zlib-ng which is distributed under the
 # PYTHON SOFTWARE FOUNDATION LICENSE VERSION 2.
 
-__version__ = "0.5.0-dev"
+__version__ = "0.4.2"