Directives collection always named directives.

The directives collection of a template and the collection of child
directives of a directive are now both named `directives`. Removed a
conditional statement from `inorder` that tested for presence of the
directive children under the alternative name `children`.
Extract Stencil URL from comment without closure.

Removed the closure that wrapped the loop in `reconstitute` that sought
the comment containing the Stencil URL.
Sideline tests failing due to reimplementation.

I now have enough tests passing my reimplementation that I now want to
sideline the failed tests. I didn't notice that `require.t.js` stopped
passing a few commits back because it's failure was lost in the spew.

I'm testing serialization in every test now, so that test has been
deleted. JSON is no longer a special case, so that test has been
deleted.

Closes #65.
Merge branch `sideline-tests` into `redux`.