Remove debug message
Better error message.

When using + or - in an xpath expression and the first or second
value is a table, we should throw a better error message than
"something is wrong".
Box/width can be an absolute value

Now values such as "5mm" are allowed. Still allowed: number of grid
cells.
Reset marker in <Option> element

If resetmarks is set to 'yes', don't read the marks file from
previous run.
Allow <Action> in <Paragraph>
Small changes: remove marks in sp clean + doc
Bugfix: default resetmarks='no' in options
Rename option ignoreeof to ignoreeol
XPath attributes with _ are recognized

@foo_bar works now
New feature: set pagetype in NewPage

We can now request a specific page type in NewPage, even if the
page type would not have been chosen. That is you can create a 
page type with 

<PageType name="foo" test="false()"> and request it with


  <NewPage pagetype="foo" />