Colored output can be controlled on the command line with
`--use-color auto|always|never`. The default is `auto`, which enables
color if `imdl` detects that it is printing to a terminal.
Color can be disabled entirely by setting the `NO_COLOR` environment
variable.
type: added
Safely delete a merged feature branch:
1. Check out `master`
2. Check that there are no pending changes
3. Rebase onto latest github master
4. Check that there are no changes relative to feature branch
5. Delete feature branch
type: development
