Update URLs to point to GitHub
Revert "oh-oh-oh-oh, O-line Gangham Style"

This reverts commit d1a9efaffd22af98aa4b2ca88f510916b7983796.
Added me to CREDITS
Update oper-up message
Bump version to 6.4-dev
Updated extensions/extb_channel to allow for private channels
remove redundant testing code
Revert "remove redundant testing code"

This reverts commit f47b353df119b76bc3230ec0ba1a801c3417330c.
Revert "Updated extensions/extb_channel to allow for private channels"

This reverts commit 3a7e173246b975571970300df06e88198abb1abc.
Freenode's sasl_usercloak extension added to aid in setting up a Tor hidden service entry point to a network running ShadowIRCD
Replaced spelling error, you may no longer "gein" chanop using OPME, you will instead "gain" it
Added snotes for failed SASL authentication attempts if need_sasl flag is set.
Updated help/opers/snomask to add +S snomask.