Foreach Loops

Foreach Loops (or whatever you want to call them) are a super useful feature in every other programming language, so let's implement it!

Here's my idea:

```
[1234]{no}u

`u` goes through each element in an array 
     and runs a codeblock with the variable 
     `n` being the current element

[1234] Pushes array with 1234
{no}     CodeBlock to print each element
u         Iterate over array
```
