Web.HTTP: fixed curl._command()
Merge pull request #79 from syngan/sg-http-cmd

Web.HTTP: fixed curl._command()
Experimental.LazyList: initial prototype with from_list(), is_empty(), unapply(), and take()
Experimental.LazyList: bugfix in take()
Experimental.LazyList: initial doc
Experimental.LazyList: use cons cell to make it lazy, preserving the interface.
Experimental.LazyList: add usage and remove something different. thanks thinca!
Experimental.LazyList: trivial refactoring
Experimental.LazyList: support thunk
Experimental.LazyList: impelment lazy filter()
Data.List: add conj() like cons()
Data.List: documentation for conj()
Data.List: todo (spec)
Experimental.LazyList: bugfix: filter() counted down too much
Experimental.LazyList: store accumulated functions outside each items
Experimental.LazyList: bugfix in from_list()
Experimental.LazyList: refactoring: no need for branching
Experimental.LazyList: bugfix in is_empty()'s usage.
Experimental.LazyList: add take_while()
Experimental.LazyList: abandon cons cell. Just use thunk for everything.