Use Shunting-yard algorithm for generating transforms

[malramsay64]

The (shunting-yard)[https://en.wikipedia.org/wiki/Shunting-yard_algorithm) algorithm is a general method of calculating a mathematical expression from a text input. This would handle the general case much better.

There are a number of implementations in rust

• Rosetta code
• rekka/meval-rs
• simon-whitehead/rust-yard

I will need some modifications to this algorithm since I am using it to fill values in a matrix so I don't think using an external crate is the solution.