@Kha We will probably have to write a handwritten formatter in the
future. The new test shows some limitations with `do`, `else if`, ...
where we want the output
```
if x == 0 then do
IO.println "foo"
IO.println "zero"
else if x % 2 == 0 then do
IO.println x
IO.println "even"
else do
IO.println x
IO.println "odd"
```
