more code generation
latest current stable version is 7.1.0
Predef.conforms is deprecated. use identity
remove unused import
Merge pull request #787 from xuwei-k/code-generation

more code generation
update links. scalaz-seven is no longer maintenanced

- https://groups.google.com/d/topic/scalaz/4gKSSYwpKxE/discussion
- https://github.com/scalaz/scalaz/commit/0a5f2e9b9c1db0e90ff873909033cb7fb313a989#diff-04c6e90faac2675aa89e2176d2eec7d8R122
 - https://github.com/scalaz/scalaz/blob/0a5f2e9b9c1db0e90ff873909033cb7fb313a989/core/src/main/scala/scalaz/OptionT.scala#L23
 - https://github.com/scalaz/scalaz/blob/0a5f2e9b9c1db0e90ff873909033cb7fb313a989/core/src/main/scala/scalaz/OptionT.scala#L59
tweak scaladoc
Reduce Vector Monoid to be just O(n) for 2.10
Fix Monoid for IndexedSeq rather than Vector
Delete IndexedSeq instances and operations

Use Vector, where we can talk about complexity of all operations, rather
than just a couple.
Change Foldable toIndexedSeq to toVector
Add back in IndexedSeqTest as VectorTest