Convert Number Bases

Convert from any base and encoding to any other base and encoding.

Base: Base 2, Base 10, Base 16, Base 64
The number of symbols used to represent a value.

Encoding: The symbols used to represent the value of a digit in a particular place.

Examples:
Base 10 Decimal to Base 16 Hexadecimal:
cnvbase('76','0123456789','0123456789ABCDEF') = '4C'
Base 10 to Base 255:
cnvbase('8745','0123456789',[0:255]) = [34 41]

The algorithm for converting from one base to another does not rely on converting the input to a single float, thus avoiding precision problems with integers greater than 2^53.