release v0.12.3

Signed-off-by: Florian Scherf <f.scherf@pengutronix.de>

Author: fscherf

setup.py

@@ -5,7 +5,7 @@
 
 __name__ == '__main__' and setup(name='aiohttp-json-rpc',
       include_package_data=True,
-      version='0.12.2',
+      version='0.12.3',
       author='Florian Scherf',
       url='https://github.com/pengutronix/aiohttp-json-rpc/',
       author_email='f.scherf@pengutronix.de',