in the wikilink looked like a table field separator. Avoid this ambiguity
by linkifying the data before parsing it as a table.
* Turn on allow_loose_quotes in the table plugin's Text::CSV object,
so that links from wikilinks don't confuse the parser.
for extended pagespecs. The old calling convention will still work for
back-compat for now.
* The calling convention for functions in the IkiWiki::PageSpec namespace
has changed so they are passed named parameters.
* Plugin interface version increased to 2.00 since I don't anticipate any
more interface changes before 2.0.
joey