Feature/add support for fixed geometry

[AlexSkrypnyk]

No description provided.

[AlexSkrypnyk]

This PR cannot be merged straight away as it does not correctly handles top values of the elements within the same fixed container.

More work is required to make a decision how fixed elements within fixed scrollable container should be handled when compared with elements outside of those containers. Options:

Option 1. Try to scroll to each element within each container (including nested containers) and retrieve geometry (this is what this PR does), but it introduces an issue with comparing components within the same scrollable container - because they are scrolled to, they have the same top value.

Option 2. Allow comparison only between elements of the same scrolling fixed container OR between elements outside of fixed container and throw an exception that mixed comparison is not supported.

Option 3: Use approach from Option 1 for non-fixed and fixed comparison, but use Option 2 for components within fixed container, but this introduces the whole new geometry criteria (similar to .position() and .offset() in jQuery).