Prepare for 0.6.3

Author: fabaff

setup.py

@@ -19,7 +19,7 @@
 
 setup(
     name='luftdaten',
-    version='0.6.2',
+    version='0.6.3',
     description='Python API for interacting with luftdaten.info.',
     long_description=long_description,
     url='https://github.com/fabaff/python-luftdaten',