1.6.8

update version

1.6.7

update version

1.6.6

add cffi lib for python3.5.2 too

1.6.5

update version

1.6.4

bug fix for aiohttp and update version

1.6.3

support more iqiyi type and update version

1.6.2

update deps and version

1.6.1

update deps and version

1.6.0

bump version

1.5.9

update version and submodule, also sync with bpo-34819