Option '--multiline' was replaced with '--mode tabular|multiline'.
It was neccessary to be able to switch to tabular output mode for
'dev list' and 'con list id|uuid' commands as they now print out
in multiline mode by default. All other commands are in tabular
mode by default.
The output is basically tabular with fields (columns) presenting specific pieces of info.
Each line represents a single object. It's possible to switch to multiline output using
'--multiline' option. In that mode single object is presented on more lines - each field
on its line.
Terse mode now uses ':' as field separator. It also escapes all occurences of ':' and '\'
inside field values to ease parsing. The escaping behaviour can be controlled through
'--escape' option. By default, escaping is switched on in tabular mode. When using terse
mode ('--terse'), '--fields' option is mandatory for specifying required fields. That helps
for flexibility and backwards compatibility.
Not all output is converted yet.
