Take a stab in the dark at AgenDAV v2.1.0 support.
-rw-r--r-- 544 Rakefile
drwxr-xr-x - bin
drwxr-xr-x - doc
drwxr-xr-x - lib
-rw-r--r-- 1726 mailshears.gemspec
drwxr-xr-x - test