XSLT 2.0 Equivalence

The next milestone for Xrust is equivalence (or dare I say it... conformance) with XSLT v2.0.

This requires the following major features:

• Data typing and type conversion. "as" attribute for variables and functions.
• Temporary trees. These have already been implemented, but probably need further testing.
• xsl:for-each-group (already done, but some grouping methods need further work)
• User defined functions (already done)
• Multiple result trees
• Regular expressions. xsl:analyze-string
• Schemas
• Invocation of a named template
• Collations for sorting
• xsl:next-match (already done)
• xsl:character-map
• Formatting dates and times (already done)
• Tunnel parameters
• Changed template semantics wrt modes
• xsl:perform-sort
• xsl:unparsed-text