v0.9.6

• Fixed a bug in my_init: child processes that have been adopted during execution of init scripts are now properly reaped.
• Much improved my_init:
  • It is now possible to run and watch a custom command, possibly in addition to running runit. See "Running a one-shot command in the container" in the README.
  • It is now possible to skip running startup files such as /etc/rc.local.
  • Shutdown is now much faster. It previously took a few seconds, but it is now almost instantaneous.
  • It ensures that all processes in the container are properly shut down with SIGTERM, even those that are not direct child processes of my_init.
• setuser now also sets auxilliary groups, as well as more environment variables such as USER and UID.