[dev] CalDAV updates in iCal

[Evert Pot]

I just wanted to drop a quick line about this. What I presume is since  
Snow Leopard (recently upgraded), iCal now appears to have changed  
it's implementation a bit.

Since I haven't been near full CalDAV-compliance, but simply  
implemented the parts sunbird and iCal were using, this means there  
will be more work implementing the new features it touches. The most  
significant is that a much bigger deal of RFC 3744 (ACL extension to  
WebDAV), and even select parts of RFC 3253 (Versioning extensions) are  
now used.

Evert