Multiplication

Hello!

This is an awesome project.

I wonder if it is possible to realize integer multiplication of two variable Bits.

At the moment there is only the ```sum```-method available.

Can I somehow execute the sum k-times, where k is another variable (of Logic.variableBits)?

Thanks for your answer.

Start by locating the sum method and the Logic.variableBits implementation mentioned in the issue. Review existing tests for variable-bit arithmetic and determine the expected behavior and representation for multiplying two variable Bits. Done means multiplication works for the supported inputs and has coverage for the new behavior.

Written by the indexing model from the issue text.