Calc-ium Oxide, a simple stack based command line calculator written in rust
```sh $ cao 1 5 sqrt + 2 / 1.618033988749895
$ cao '2 2 30 ^ *' 2147483648
$ cao '2 2 30 ^ * 1 - prime' 1
$ cao 372 64 gcd 4 ```
Refer to DOCS.md
