Booleans and Advanced Conditional Expressions

[sunjay]

• [ ] Add a boolean type and the two keywords true and false which evaluate to a single cell with values 00000001 and 00000000 respectively
• [ ] Support not x
• [ ] Support x and y
• [ ] Support x or y
• [ ] Support x == y for all types
• [ ] Support x != y for all types
• [ ] Support x <= y for numeric types #11
• [ ] Support x < y for numeric types
• [ ] Support x >= y for numeric types
• [ ] Support x > y for numeric types
• [ ] etc.

These are all new expressions that should be added to the expression parsing.

[sunjay]

On hold until we progress more with the language.