update setup.cfg

Author: kienerj

setup.cfg

@@ -1,6 +1,6 @@
 [metadata]
 name = pycdxml
-version = 0.1.4-alpha
+version = 0.1.5-beta
 author = Joos Kiener
 author_email = joos.kiener@gmail.com
 description = Work with and convert between ChemDraw Formats cdx and cdxml
@@ -13,7 +13,7 @@ classifiers =
     Programming Language :: Python :: 3
     License :: OSI Approved :: GNU General Public License v3 (GPLv3)
     Operating System :: OS Independent
-    Development Status :: 3 - Alpha
+    Development Status :: 4 - Beta
 
 [options]
 packages = find: