* usr/bin/byobu-janitor:
  - ensure byobu can be purged without breaking a bashrc
* usr/bin/byobu-launch, usr/lib/byobu/ec2_cost,
  usr/lib/byobu/hostname, usr/lib/byobu/include/shutil,
  usr/lib/byobu/ip_address:
  - work around checkbashisms false positives
* usr/bin/byobu-janitor:
  - fix error in echo
releasing 5.52
opening 5.53