[Changes for 0.22 - 13 Jul, 2004]

Performance improvement:

* Use descendent anchors for importing when possible.

* Give svkpath to SVK::XD to make use of the checkout_delta cache in SVK.

* For vendor import on subtree, don't copy the whole tree and then
  delete the others.

[Changes for 0.21 - 5 Jul, 2004]

Fix compilation and document all options.

[Changes for 0.20 - 23 May, 2004]

Initial release.
