Fix issue with redundant jumps in while

Added support for math function

Added assignment operators

Optimesed ifstmt for less jump instructions

Added lookahead for branch to save instructions

Added support for reagents

Added db as default device

Added error handling

Reworked structure of compiler.

Added early slot access support

Improved --debug info

Added support for "not"

Always have a line sep at the end

Capture parser errors

Added support for stdin