modify_unit: Modify the action of a unit or group of units
In seth127/MundusCentrum: What the Package Does (One Line, Title Case)

Modify the action of a unit or group of units

1	modify_unit(game, .p, .u, .a, .l = NULL)

`game`	The game to modify the unit(s) in
`.p`	The player who owns the unit(s)
`.u`	Either a character vector of unit names to modify, a vector of unit_id's , or a scalar of a map loc, in which case all units in that loc will be modified.
`.a`	Action to assign to units
`.l`	Location to move units to (if NULL, assumed to be same as where they are)