preValdiation doesn't pass the computed state to the validation functions

[gmmorris]

When you call preValidate the computedState doesn't include the attributes passed to preValidate, but rather the model attributes.
This differs from the regular validate functionality which means validation functions that depend on multiple attributes break (true, not an idea situation anyway, but sometime you need that and the behaviour should be uniform in both usages).

[gmmorris]

Made a fix and submitted a pull request (#303)

I wasn't sure what your versioning and releasing procedure is, so I haven't changed the version - let me know if you wish for me to bump the minor version.

[austing]

This is a serious problem, but the pull request is almost a year old, and nobody has replied to it!