Small implementation of general unit parsing.
The basic function is parse_units, transforming a string into a Unitful unit.
julia> parse_units("nanoamps3 seconds / micrometer^2")
nA^3 s μm^-2At its core this package just transform a complicated string to one that
Unitful can parse.
You can get that simpler string by using reduce_units_expr.
julia> using Unitful
julia> s = reduce_units_expr("kilometers / m^2")
"km*m^-2"
julia> uparse(s)
km m^-2