version bump to 0.5.1

Author: olegm

setup.py

@@ -15,7 +15,7 @@
 
 setuptools.setup(
     name='asyncio_pool',
-    version='0.5.0',
+    version='0.5.1',
     author='gistart',
     author_email='gistart@yandex.ru',
     description='Pool of asyncio coroutines with familiar interface',