separate Yoneda and Coyoneda
add Coyoneda instances
CoyonedaTest
Added whenM, untilM, and forever monadic combinators
Detailed example of Writer usage.
removed comments from Scala worksheet.
Add Const functor and const function

`const` function inspired by Runar's
[A Proper Constant Function in Scala](http://apocalisp.wordpress.com/2010/04/21/a-proper-constant-function-in-scala/)
blog post.
removed string interpolation
removed usage of foreach/ Each
adding sequencef to foldable, sequence specialized on free
Add common instances for LiftIO and MonadIO
s/7.0.5/7.0.6
catchSome/Left + using for MonadCatchIO
formatting
fixed context bound for 2.9
Add Resources section to README

Hopefully this is helpful to newcomers.

In particular, it is very difficult to find the Scaladocs via web search. I don't know if I ever would have found them if it weren't for the topic in #scalaz on IRC.
fixing syntax.sequenceF_ to use Liskov instead of Leibniz as per Kenji's suggestion
Merge branch 'scalaz-seven' of https://github.com/scalaz/scalaz into scalaz-seven_sequencef
fixing a missing line, I'm learning about check-gen-type-classes!
Merge pull request #653 from kenbot/scalaz-seven

Added whenM, untilM, and forever monadic combinators
Merge pull request #656 (up until e6fc611)

Improved example of Writer usage.