Convert a value or list of values from one unit to another.
values [Required]
Values to be converted from one unit type to another.
from_u [Required]
Text indicating the units of the input _values (eg. 'C')
to_u [Required]
Text indicating the units of the output values (eg. 'K')
all_u
A text string indicating all possible units that can be plugged into _from_u and _to_u.
values
The converted numerical values.
