This is a major version release.
changes include:
-Undo/Redo
-support for objects (and indexes!) with more than 2**31 rows
-new datatypes
-improved HDF5 support
-compression support
PyTables 0.9.1:
This release is mainly a maintenance version. In it, some bugs has been
fixed and a few improvements has been made. One important thing is that
chunk sizes in EArrays has been re-tuned to get much better performance
and compression rations. Besides, it has been tested against the latest
Python 2.4 and all test units seems to pass fine.
PyTables 0.9:
In this release you will find a series of quite exciting new features,
the most important being new indexing capabilities, in-kernel selections,
support for complex datatypes and the possibility to modify values in both
tables and arrays (yeah, finally :).