Don't pointlessly return in methods that ignore return values

[GoodForOneFare]

Some functions like Lodash's _.each ignore return values. To avoid copy+paste anti-patterns, it might be useful to clean those up.

// Before
return _.each(foo, (element, index) => {
  if (index === 0) {
    return; // This return short-circuits following logic, so it has to stay.
  }

  return element.position = index;
});

// After
return _.each(foo, (element, index) => {
  if (index === 0) {
    return; // This return short-circuits following logic, so it has to stay.
  }

  element.position = index;
});

Note that $._each is influenced by return values, so be sure to ignore those :)

[andyfangaf]

Fixed in #171