Xsdata

- Fix flattening enumeration unions.
- Fix generation for enum fields with default/fixed value.
- Fix duplicate attribute names handler to be case-insensitive.

- Added support to fetch remote schemas.
- Updated duplicate attribute names handling.
- Updated code generation for enum type fields and default values.
- Fixed issue not generating classes derived from simple types.
- Fixed analyzer reaching the maximum recursion depth.
- Fixed analyzer to flatten properly inner self referencing classes.
- Moved dataclasses python conventions to jinja filters.

- Updated codegen cli to accept multiple definitions or directories as argument.
- Update ClassBuilder to recursively search for anonymous types.
- Updated XmlParser to be thread-safe.
- Added performance tweaks on XmlParser.
- Added parser config to fail or not on unknown properties.
- Fixed primitive types being marked as forward references.
- Fixed nested restrictions on xs:simpleType.
- Fixed ClassAnalyzer to recover/ignore missing types.

- Added support for abstract xsi:types in XmlParser.
- Added cache for event names in XmlParser.
- Added sanitization for generated module names.
- Fixed not flattening abstract extension.
- Fixed extension name conflicts between simple and complex types.
- Fixed possible memory leak in CodeWriter.
- Fixed looping variables twice to find next node in XmlParser.
- Fixed CodeWriter adding unnecessary new lines.

- Fixed open content attribute with mode suffix to be generated last.
- Fixed issues with wildcard and mixed content parsing.
- Updated xs:qname mapping to lxml.QName
- Updated support for xs:list.
- Updated parser to ignore xsi:type attributes default/fixed values.
- Refactored code components.
- Pass more than 99% of the `W3C XML Schema 1.1 test cases
https://travis-ci.org/tefra/xsdata-w3c-tests

- Added support for sequential fields.
- Added support for open content.
- Added support multiple redefined elements.
- Updated support for wildcards to be aware of generic namespaces.
- Updated support for wildcards to be aware of non-generic objects.
- Updated codegen to run after fully parsing all the definitions.
- Updated codegen to skip unresolved schema locations.
- Updated xml parser to ignore comments.
- Updated xml parser to retain a copy of the input namespaces.
- Fixed issues with nillable fields being ignored.
- Fixed multiple issues with wrong restrictions being applied.
- Fixed binding issues when there are naming conflicts.
- Fixed serialization for inf/nan/exponential float and decimal values.
- Fixed naming conflicts with class/package names.
- Fixed multiple circular import issues during parsing and code generation.
- Pass more than 98% of the `W3C XML Schema 1.1 test cases
https://travis-ci.org/tefra/xsdata-w3c-tests