fix set_color_cycle from matplotlib deprecation warning

/usr/lib/python2.7/dist-packages/matplotlib/cbook.py:137: MatplotlibDeprecationWarning: The set_color_cycle attribute was deprecated in version 1.5. Use set_prop_cycle instead.
warnings.warn(message, mplDeprecation, stacklevel=1)

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from pyjs.jsonrpc import JSONRPCServiceBase

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class JSONRPCService(JSONRPCServiceBase):

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    def serve(self):

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        return self.process(request.body.read())

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    def __call__(self,func):

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        self.methods[func.__name__]=func

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        return func

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