Vertical spacing makes the code more legible. This version adds a single
blank line after almost every semicolon.

There are two exceptions:
- If there`s a `within` on a given line, a blank line won't be added.
- If inside matrix (i.e. `[]`), a blank line won't be added.

  Example output:

    parameter Integer[2,2] A = [
      1,2;
      3,4];

Also:
- Add example with formatting arrays and matrices

Known issues:
- The formatted file will have two blank lines at the end. The solution
  would be to detect if we're on line with the last `end` within the
  file, and then skip adding an additional blank line. There might be
  multiple `end` in a file, so this is not that obvious to solve.

We need to find a way to get rid of duplicated blank line at the end of
files that have semicolon in the last line.