[
{
  type: upgrade
  message: <<EOM
tmux must be restarted after upgrading.

If you see the following message when you try to attach, it likely means
you forgot to restart tmux:

  open terminal failed: not a terminal
EOM
}
{
  type: upgrade
  maximum_version: "3.6a"
  message: "The bash completions for tmux have been moved to the bash-completion package."
}
]
