* Improved math expressions
Things are in a better state, + - / * work now for basic const var = 5 <operator> 1
Though the current method I'm using to make the ast isn't really going to work for dealing with precedence rules so some refactoring is needed going forward
* get complex math expressions working with precedence including parans
Node that identifiers are working, call expressions are not, that's a TODO
/ * % + - are working both other things like exponent and logical operators are also not working.
Recasting is the most important thing to implement next
* get recasting working for nested binary expressions
* clean up
