(new cli api) Hello, repl. (=

Squashes: a0d1a, 68d3a
(re style cli) Huge, fragile, horrible, monkey-patching hacks

Squashes: e91b5, 71dc6
(- fix api) Patch Tput's handling of columns

Squashes: d1b9c, c5917
(- doc style new) Print a seperator at the top of usage
(- tests new) Properly exercising ##synchronous with nullaries