Skip async function test on python3.4 #291

Job	Run time
Create sdist and Python 3 Wheel	31s
test_typing (sdist)	32s
Create Python 2 Wheel	45s
test_typing (wheel)	33s
Test Documentation	33s
Test Package (2.7, sdist)	16s
Test Package (2.7, wheel)	14s
Test Package (3.3, sdist)	19s
Test Package (3.3, wheel)	18s
Test Package (3.4, sdist)	17s
Test Package (3.4, wheel)	21s
Test Package (3.5, sdist)	22s
Test Package (3.5, wheel)	17s
Test Package (3.6, sdist)	22s
Test Package (3.6, wheel)	17s
Test Package (3.7, sdist)	14s
Test Package (3.7, wheel)	15s
Test Package (3.8, sdist)	16s
Test Package (3.8, wheel)	15s
Test Package (3.9, sdist)	23s
Test Package (3.9, wheel)	23s
Test Package (3.10, sdist)	30s
Test Package (3.10, wheel)	26s
Test Package (3.11, sdist)	26s
Test Package (3.11, wheel)	24s
Test Package (3.12, sdist)	28s
Test Package (3.12, wheel)	24s
	10m 21s

Provide feedback