Curve

Hello,

First to tell you thanks for your great library.
Just yesterday I made similar thing in a project of mine, but yours is almost complete.

As I saw you will like to include directions (down,left,up and right) which is great.
I think the library will be great if there is also a curve expanding/collapsing involved.
I would like to contribute and make an PR with this functionality.

So my question is this:

Do you thing this is good idea to add to the library? (I don't want to waste my time)

This issue is a proposal for adding curved expansion and collapse to the ExpandableSelector Android library, but it names no files, tests, or entry points. First confirm whether the maintainers want this behavior and clarify the expected curve interactions; done would require an agreed design and implementation scope.

Written by the indexing model from the issue text.