merge

remove unused getter from CPU

first tests of timer; fixed test suite; made CPU.setSign() branchless

added a timer for cycle sync

the first non trivial program is running - fast multiply of a number with 10

first run of the new instructions

added all keys to instruction set

implemented more instructions

added some instructions; found a got way to deal with branch instructions

added tons of stuff; structure of instruction set is now settled; added first tests

got a first test running

started implementing instruction set

put emulation code into its own directory, a simulation directory will follow

simplify pullup code

simplify pullup handling

using unbuffered channels makes the code 10% faster

started implementing a flip flop for more testing; introduce vss as - source, which simplifies code

added benchmark

m:1 wires are now implemented with 1 input chan - just let all transistors write to that one channel, it works

various simplifications and clean ups