Keep additional spaces

[julien-diener]

I have seen some issues about alignment (eg #161 and #176) and I wanted to propose an other option to align comments, such as:

val x  = 2              // note the = align, see #176  
val fx = f(x).head  // the need only the first element

But then, I thought it'd be simpler to have an option such that scalariform only assert there are enough spaces (eg: one before and one after =), but let additional ones that the coder chose to write.

The same goes for additional blank lines.

Tell me if I can be of any help, or some hint on where to look in your code.

[jkinkead]

For a global change like this, I think your best bet would be to alter how the formatter processes formatting instructions.

I think you'd need switches in the handling of CompactEnsuringGap and CompactPreservingGap, and append the existing whitespace tokens instead of the " " literals.