Update BigBen
Merge pull request #5 from 013/master

Added :s substituion, thanks to 013
Made the :s functionality work on a per-channel basis
Made message substitutions work with /g flag
fixed range on :s/ messages blame 013
Fixed 'unexpected end of pattern'

Fixed 'unexpected end of pattern'
Merge pull request #7 from 013/patch-2

Fixed 'unexpected end of pattern'
really fixed unexpected end of pattern
Updated the README file to reflect the changes for the :s functionality.
Uncommented the code that searches for messages once :s/ is invoked based on channel
Fixed BigBen from dying with an invalid replacement
Merge pull request #8 from 013/master

Fixed BigBen from dying with an invalid replacement, thanks 013 again, he finds bugs then fixes them
Fixed some crashes with invalid replacement syntax
fixed it
Added 4chan search
Merge pull request #9 from 013/master

Added 4chan search
Fixed bugs with threads not working as 013 reused the variable name thread in 4chan threads
athreads > threads in message to channel
fixed a bug with invalid thread search syntax
Rewrote substitution