Hey, I'm considering adding out-of-box support for maccatcher to postgresql-simple, and was curious if you'd be willing to add these functions. Names are negotiable, of course.
Added Antonie Latter as a contributor
Add toByteString/fromByteString functions
The idea is that eventually, these will be replaced with functions
that don't do string packing/unpacking
Bring fromByteString more in line with read