* configure.ac, Makefile.am, === removed directory
  usr/share/byobu/ec2, usr/lib/byobu/ec2_cost,
  usr/lib/byobu/include/ec2instancespricing.py,
  usr/lib/byobu/include/Makefile.am, usr/share/byobu/ec2/Makefile.am,
  usr/share/byobu/ec2/rates.ap-northeast-1,
  usr/share/byobu/ec2/rates.ap-southeast-1,
  usr/share/byobu/ec2/rates.eu-west-1, usr/share/byobu/ec2/rates.us-
  east-1, usr/share/byobu/ec2/rates.us-west-1,
  usr/share/byobu/ec2/rates.us-west-2:
  - use a smarter algorithm for estimating ec2 cost
  - include ec2instancespricing.py from
    https://github.com/erans/ec2instancespricing
* debian/postinst, usr/bin/byobu-config, usr/bin/byobu-select-session,
  usr/lib/byobu/include/ec2instancespricing.py: LP: #996559
  - use env for shebang in development tree
  - fix this up in the postinst
    + seems racy -- there's got to better way of handling this???
  usr/lib/byobu/include/ec2instancespricing.py: LP: #996559, #988471
* usr/bin/byobu-launcher-install, usr/bin/byobu-launcher-uninstall:
  - LP: #1002137
  - support fish shell in the installer
* usr/bin/byobu-select-session:
  - fix python exception
* usr/bin/byobu, usr/share/byobu/keybindings/f-keys.tmux: LP: #1103449
  - fix regression, re-enable blank window titles in both screen and tmux
releasing 5.31
opening 5.32
* usr/lib/byobu/mail: LP: #1118364
  - support maildir format
* debian/rules, usr/bin/byobu, usr/bin/byobu-launch,
  usr/lib/byobu/include/common, usr/lib/byobu/include/constants:
  - clean up some bashisms (better portability)
  - checkbashisms at build time
* usr/bin/byobu-launcher-install:
  - better fish launcher conditional, per actual fish user