• license: change license to gplv2+ and lgpl2.1+.
• criu: initial support for container restore.
• state: If a container is paused, report its state as 'paused'.
• cgroup: use the memory controller to ready PIDs. The pid controller is not available on kernels older than 4.3.
• linux: drop context= for remount. Older linux versions complain when the selinux label is specified on a remount.
• utils: fix mount on not writeable path.
• cgroup: support systemd properties via annotations.
• systemd: do not set hard-code collectmode value. It can be set through an annotation.
• cgroup: write the correct blkio settings.
• exec: do not inherit env variables from main pid.
• ebpf: fix endianess issue on s390x.
• linux: fix recursive mount on cgroup v1.