Fixed inappropriate TableView reload and added correct events in CollectionDirector

[balavor]

Description

TableDirector reloads the entire table when it's not necessary.

How to reproduce

1. Set a section with some elements.
2. Create a new TableSection with the same id as previous and with the same rows.
3. Add some additional new rows to that section.
4. Set that section in reload method:

    director.reload(afterUpdate: { director -> UITableView.RowAnimation in
      director.set(sections: [section])
      return .automatic
    })

EXR: New elements appear on the bottom with animation
ACR: The entire section is reloaded with an animation.

Fix

A fix for that is to use the same logic to compare sections content as in the CollectionDirector.

Related Issues

#45

Also

Additionally, PR includes event fixes in CollectionDirector delegate methods.