- Handle valueless attributes a bit better.
    In particular, if a valueless parameter is not
    in the first position, it is not confused for a name,

  - Added "..." shorthand for exprs, so now you can:

      <!--#if "x < 1"-->

cutting and pasting them.

  - size prefs now separate from Document prefs

  - size prefs now separate from Document prefs
  - Fized bug that caused src changes to be lost

(i.e. schema) and list of rows.

Began adding support for pickle-based network protocol that, alas, may
fall by the wayside. Waaaa.

  This support is currently disabled due to security and performance issues,
  especially wrt Missing and Date values.

- Fixed cache problem, I guess.

Added support for '.' and '..'.

Added new 'method' form item type to allow form data to augment PATH_INFO.