update package.scala scaladoc
add alias for comparing on Order
Merge branch 'scalaz-seven' of github.com:scalaz/scalaz into scalaz-seven
fix Heap#toUnsortedList.
Previous implementation is so slow. Because it returns sorted List in spite of toUnsortedList.
Merge pull request #238 from xuwei-k/package-scaladoc

update package.scala scaladoc
Merge pull request #239 from xuwei-k/Heap-toUnsortedList

fix Heap#toUnsortedList.
fix Heap#foreach
Merge pull request #242 from xuwei-k/Heap-foreach

fix Heap#foreach