Version 2.1.1 is stable.
Fixes were applied to 2.2.x and trunk so it should work.
The vpf module is believed to be stable for data reading. There are no plans to implement writing at this time.
There are a number of reasons why there are no real tests.
- many data files are required to have a real VPF datastore. Do we really want to add them to SVN?
- it takes a while to do a non-trivial amount of VPF processing
- it would take a significant amount of effort to write useful tests
Please refer to: