Changelog:
==========
- Fix incorrect validation error for substitution group with abstract head
- Refactor XSD identities processing using also typed XPath 2.0+ for getting values
- Clean tag retrieval during encode for some converter types
Signed-off-by: Wang Mingyu <wangmy@fujitsu.com>
Signed-off-by: Khem Raj <raj.khem@gmail.com>
