Add compareTo operator for XInt/YInt

[dimsuz]

There are certain scenarios (like the one described in #59) in which it is handy to do something like this:

if (view1.bottom() < view2.bottom()) view1.bottom() else otherView.top()

Currently XInt/YInt lack operator fun compareTo which prevents the above from compiling.
The workaround could be to use minOf(view1.bottom() - view2.bottom(), 0.ydip) == 0.ydip but that's a bit ugly.

Can those be added (I can forge a PR) or do you have something specific in mind why this is not a good idea?

[carranca]

That feels like an omission - seems like it'd be a good addition (for XInt/YInt/XFloat/YFloat)

[carranca]

@dimsuz a PR would definitely be welcome, otherwise I or someone else might try to get to it over the next week or two?

[dimsuz]

Yep, I'll post one unless someone beats me to it.
I guess it's nothing complicated along the lines of

operator fun compareTo(other: XInt): Int {
  return this.value.compareTo(other.value)
}

etc

[oldergod]

I will do it right now

[oldergod]

Released in 0.1.7