Modified nest-depth to handle nd=3 in block processing. Watch for adverse side-effects!
Revert "Modified nest-depth to handle nd=3 in block processing. Watch for adverse side-effects!"

This reverts commit 88146160724ee5126d5ef5be4b57765416f0e29e.
Modified normalize-subtree to handle nd=3 in block processing. Watch for adverse side-effects!
Updated test suite.
Updated article.html to conform to current spec. NOTE 'strip' attribute
on defvar may be necessary, but is not currently implemented.
Updated template to conform to current spec.