Fixes #86 CalDAV client If no Depth header is set, the default is 0. A strict DAV server will return no records for a 0 Depth, as SabreDav does.
Fixes #86
CalDAV client
If no Depth header is set, the default is 0.
A strict DAV server will return no records for a 0 Depth, as
SabreDav does.

mta59066/Z-Push-contrib,fmbiete/Z-Push-contrib,RavenB/Z-Push-contrib,Freeaqingme/Z-Push-contrib