fix, PEBKAC, properly deal with precedence (| over ?:)

Signed-off-by: Sebastian Freundt <freundt@ga-group.nl>
minor, allow passing opening flags to pump() in rbm(1)

Signed-off-by: Sebastian Freundt <freundt@ga-group.nl>
minor, provide prop subcommand for propagation, kick dream()

Signed-off-by: Sebastian Freundt <freundt@ga-group.nl>
minor, provide --sample to prop subcommand

Signed-off-by: Sebastian Freundt <freundt@ga-group.nl>
Merge branch 'cmd/rbm-prop'

* cmd/rbm-prop:
  minor, provide --sample to prop subcommand
  minor, provide prop subcommand for propagation, kick dream()
  minor, allow passing opening flags to pump() in rbm(1)
  fix, PEBKAC, properly deal with precedence (| over ?:)