Adds a new property to taggable which automatically deletes an empty tag.
Reviewed by: Lennard de Rijk
/** the options */
opt = Opt.get(
arguments,
{
d: "directory",
c: "conf",
"D[]": "define"
}
);
/** configuration */
opt.conf = {
/** keep */
keep: true,
/** base */
base: getBase(this, {p: properties})
}