YouTube: fix #203, using decryption algorithm from youtube-dl
fix unicode literal for Python 3.2
version 0.3.16
bilibili: fix #185
163: fix #205
YouTube: new algo for len 83, fix #206
remove test of JPopsuki
refactor, code cleanup for YouTube
add tests.test_common
version 0.3.17
Merge commit '65d0697' version 0.3.16
Merge commit 'f87b526' version 0.3.17