vault.exe history command

Hi,

I have just finished my CruiseControl.NET classes for Vault, which
simply wrap the command line client.  I noticed that there are no
options to limit the results returned by the history command by date.
For example, it would be nice to be able to specify "history fromDate
toDate $".  I don't know if something like that is supported by the
client API, but if it is, that would be a nice feature to expose in
future command line client versions.

For now I am simply loading the response into an XmlDocument and
filtering by the date attribute on the items.

Thanks,
Ryan