Extlib

* SHA: 16c999e8c71134401a78d4d46435517b2271d6ac
* User@SHA: mojombo@16c999e8c71134401a78d4d46435517b2271d6ac
* User/Repository@SHA: mojombo/github-flavored-markdown@16c999e8c71134401a78d4d46435517b2271d6ac
* #Num: #1
* User#Num: mojombo#1
* User/Repository#Num: mojombo/github-flavored-markdown#1