Add support for libtrust, too
Adjust "download-libcontainer" to not fail if either the libcontainer commit or the libtrust commit can't be found
Update disable-systemd-socket-activation.patch
Update upstream-patched-archive-tar.patch
Add 1.3.0 upstream-version-gitcommit
Update to 1.3.0 upstream release
Reenable systemd socket activation
Note socket activation in changelog (and close the relevant bug)
Merging tianon/debian-docker