[feature] Support regular expression queries using new range index. The syntax supported by Lucene is limited, so to avoid confusion there's a special function range:matches instead of the standard fn:matches.
[feature] new range index: add support for date and time data types. Extend tests.
Merge branch 'develop' of https://github.com/eXist-db/exist into develop
Merge pull request #85 from wolfgangmm/develop

New range index: add support for time and date types, regex matches