scalaz example
an example of the wiring DSL
bump to 0.4
make join a function and add a cat fn
Folder andThen
Folder flatMap
Folder constant (its monad now)
Folder is covariant
add utilities
fix left() and right() wiring operators
add/rename folder methods
Site object removed, DefaultSite is a class
It makes no ense to override Site run
allow covariant/contravariant matches in wiring
idea for a compose operator in wiring dsl
Source and Sink type aliases
fix tee to handle two args of different types
wiring gangs of processes
simplify
each() for folding data that is not streamed
type aliases