It doesn't work properly with folded lines

[ezhlobo]

When you fold some functions it ignores everything after.

The issue is here: https://github.com/leny/atom-easy-motion-redux/blob/fa93611a13514a8eeb834174ed4ebbf72c96e416/lib/views/input.js#L318-L322

We should add visible lines until we get necessary amount of lines.

I can provide a PR once #30 is merged (because it contains some changes I need).

Example

[ezhlobo]

The implementation is becoming harder because Atom doesn't provide any way to compute the visible range properly.

https://github.com/atom/atom/issues/17478