Bug fix; release of version 1

[Henrik Bechmann]

Hi folks, 

I've uploaded a minor bug fix, and taken simplewiki out of release candidate phase to full version 1.0. It's been pretty stable for me (see current project publiccommons.ca), and haven't heard of any problems.

One bug fix:

{{{

$20

}}}

would emit 

0

because I set aside preformats and then return them with a preg_replace() call. But preg_replace looks for backreference markup, which if it can't find, genereate zeros. So I just escape any accidental backreference markup.

- Henrik