1  - implement counted transitions at the automata level
 2  
 3  - Unicode:
 4    + upgrade to 3.2
 5    + improve the python script to generate better test
 6      expressions to check the list of ranges.
 7  
 8  - Implement the interface at the SAX level
 9  
10  - Implement the missing parts in the Structure part
11     + all content model
12     + enumerations
13     + countless others c.f. the TODO scattered in the code
14  
15  - Complete the Built-In datatype collections and Facets implementations
16  
17  - Regression tests based on
18    + the primer:
19      http://www.w3.org/TR/xmlschema-0/
20    + the Schemas Test Collection:
21      http://www.w3.org/2001/05/xmlschema-test-collection/
22    + archives of the schemas-dev list
23  
24  - Integrity constraints:
25    + what's that ? How need to read about it
26  
27  - "formal" checking, i.e. go through the full Structure spec and
28    bind code and associated parts of the Schemas spec
29  
30  - go though the erratas
31    http://www.w3.org/2001/05/xmlschema-errata