Log Message:
py-elementpath: updated to 2.0.2

v2.0.2
Add regex translator to package API
More than 99% of W3C XPath 2.0 tests pass

v2.0.1
Add regex transpiler (for XPath/XQuery and XML Schema regular expressions)
Hotfix for issue 30

v2.0.0
Extensive testing with W3C XPath 2.0 tests (~98% passed)
Split context variables from in-scope variables (types)
Add other XSD builtin atomic types