Fix version number v1.30

Author: stefankoegl

jsonpatch.py

@@ -61,7 +61,7 @@
 
 # Will be parsed by setup.py to determine package metadata
 __author__ = 'Stefan Kögl <[email protected]>'
-__version__ = '1.28'
+__version__ = '1.30'
 __website__ = 'https://github.com/stefankoegl/python-json-patch'
 __license__ = 'Modified BSD License'