[pws] [ENH] Page diff

[Bert Freudenberg]

Hey,

that TextDiffBuilder really is cool!

I build it into the history/version stuff, see for example
        http://swiki.gsug.org:8888/gsug/66.history
(click on the [DIFF] link)

Note that the attached changes are for ComSwiki Beta 8! I didn't move
to 4 winds yet ...

  -Bert-

diff.zip