Support all breaking changes listed in the FAQ

[julienrf]

See: https://github.com/scala/collection-strawman/wiki/FAQ#what-are-the-breaking-changes

There are still some breaking changes for which we don’t have a migration rule.

[MasseGuillaume]

• Issue: Rewrite breakout #46

-val xs: List[Int] = ys.map(f)(collection.breakOut)
+val xs = ys.view.map(f).to(List)

• PR Experimental #66

map.zip(iterable)
map.zip(iterable).toMap 

• PR Experimental #66

-xs + 1 - 2
+xs ++ Set(1) -- Set(2)

• PR Move migration rules here #15

-xs.to[List]
+xs.to(List)

• PR Rewrite immutable.Set/Map.+ #53

-Set(1) + (2, 3)
+Set(1) + 2 + 3

• PR Rewrite mutable.Set/Map no longer have a + operation #54

-mutable.Set(1) + 2
+mutable.Set(1).clone() += 2

• PR Rewrite mutable.Map.updated #55

-mutable.Map(1 -> 2).updated(1, 3)
+mutable.Map(1 -> 2).clone() += 1 -> 3

• PR Rewrite Map.mapValues -> Map.mapValues.toMap #60

-kvs.mapValues(f)
+kvs.mapValues(f).toMap

• PR Rewrite Iterable.sameElements -> Iterable.iterator.sameElements #59

-xs1.sameElements(xs2)
+xs1.iterator.sameElements(xs2)  

• PR Rewrite LinearSeq -> List #61

LinearSeq(1, 2, 3)
List(1, 2, 3) 

• SeqForwarder, MutableList, StreamView no longer exist
• collection.Map no longer have -- operation

[julienrf]

@MasseGuillaume Following up on the discussion in #58 and #62, I suggest that we put aside these two items for now and we move forward to the next steps. What do you think?

[julienrf]

I’m closing this issue because we already have a specific issue for breakOut and we have no plans for SeqForwarder, MutableList and StreamView. I’ve created #68 for Map.--.