Previously when wrapping vue-infinite-scroll's element inside keep-alive, callback was still executed even after swapping to another keep-alive'd component and scrolling downards.
This prevents callback expression triggering when component is inactive.
Previously when wrapping vue-infinite-scroll's element inside keep-alive, callback was still executed even after swapping to another keep-alive'd component and scrolling downards.
This prevents callback expression triggering when component is inactive.
Fixes #121, #125