Overload Char

This set of functions overloads horzcat([]), plus(+), and minus(-) for char types.Using the builtin functions:['a',98,'c'] -> 'abc''x'+1 -> 121'x'-1 -> 119Using the overloaded functions:['a',98,'c'] -> 'a98c''x'+1 -> 'y''x'+ -1 -> 'w''x'-1 ->...