checkbashisms at build time, show but don't fail
releasing 5.32
opening 5.33
* usr/bin/byobu-launch: LP: #1119446
  - fix shell syntax regression
usr/bin/byobu-launch: LP: #1119446, #1119345
releasing 5.33
opening 5.34
* debian/rules:
  - check bash syntax at build time, to avoid LP: #1119446, #1119345 again