zsh completion for dynos command app flag
remove guide caveat about flag ordering
update zsh completion for new opt parsing
get rid of combined flags in zsh completion, doesn't account for ordering of bool/non-bool
heroku-go 0.6.0
update go-netrc
downcase the db status in pg-list

Fixes #131.
print warnings returned from log tail sessions
list 20 releases by default, not 30
Add trailing newline to last printed message for pg-unfollow

Otherwise, the shell prompt would be printed immediately after the
message.
remove accidental service name from plan name completion list
cleanup addon-add completion
make argument for app flag not optional