Now including Folger Shakespeare in LMNL

Folger Digital Texts at http://www.folgerdigitaltexts.org/
Now defending better against whitespace mangling

Because XSLT pipelining must sometimes be executed in (um)
less-than-well-controlled environments, wrapping text early in tags
insulates it from capricious formatters.
Rough start at XQuery implementation (for BaseX)
Improvements to demos
Misc minor tweaks
First efforts at XQuery framework