Updates and bug fixes.
Highlights of this release include the following:
1. Added get group and get owner functions to the File class (new)
2. Windows installer supports upgrades from previous versions (new)
3. Fixed object serialization issues and enhanced overall functionality (bug/medium)
4. Addressed an issue with runtime checking of direct object casts within expressions (bug/medium)
5. Resolved a garbage collection issue related to highly concurrent code accessing shared memory (bug/low)