Changelog:
===========
- Add full PSVI type labeling in XDM to solve type errors with XSD 1.1 assertion-s
- Add schema optional argument to dynamic context
- Add a RootToken as a proxy of the parsed token tree for compatibility with xmlschema<=3.4.3
- Extend XDM to split ElementTree/lxml processing from schema nodes and to allow future extensions
Signed-off-by: Wang Mingyu <wangmy@fujitsu.com>
Signed-off-by: Khem Raj <raj.khem@gmail.com>