Added Michael

NOTE: still need to go back and do Siegfried I, which is neither fish
nor fowl.

Major new enhancement: added the AncientCourtReportParser, which works
on Jane's oldest (I think) format.  Did a bunch of fancy refactoring:
I'm getting much better at making Scala sit up and beg.  The
CourtReportParser increasingly does a good job of separating semantics
from structure.

Added a way to say "I have no idea which month this was" in OPDate.
This will let a lot of folks get at least the *year* of their AoAs in
the main listing.