Configurable article animation time (enchancement)

[gitowok]

Another good improvement would be configurable (or even on/off) article animation time for when swipe is released.

For myself I'd like the next article to instantly snap into place with no animation once the swipe is released, so I can commence reading without waiting for the animation of the article moving across to the correct place.

The same would go for the keyboard shortcuts (from #12 ). Instant change to next article with no animation (or configurable animation time) would be better for me.

Many thanks for this fine work.