isXander/Zoomify 2.0.0 on GitHub

Highlights

Zoom Behaviour option. Controls if Zoomify can only be used
with a spyglass or override the vanilla spyglass zoom.
Overlay Visibility option controls when to render the
spyglass overlay when zooming with Zoomify.
Sound Behaviour option controls when to play the
zoom in and out sounds of the spyglass.

Added Relative View Bobbing option which reduced the amount of bobbing
depending on the zoom level to make walking less jarring.

Remove Zoom Speed option in favour of Zoom In Time and Zoom Out Time
which dictates amount of seconds it takes to do said action.
Remove Scroll Zoom Speed option in favour of Scroll Zoom Smoothness.
The higher the smoothness the longer and smoother the scrolling is.

Zoom Behaviour option. Controls if Zoomify can only be used
with a spyglass or override the vanilla spyglass zoom.
Overlay Visibility option controls when to render the
spyglass overlay when zooming with Zoomify.
Sound Behaviour option controls when to play the
zoom in and out sounds of the spyglass.
Remove Zoom Speed option in favour of Zoom In Time and Zoom Out Time
which dictates amount of seconds it takes to do said action.
Added Relative View Bobbing option which reduced the amount of bobbing
depending on the zoom level to make walking less jarring.
Remove Scroll Zoom Speed option in favour of Scroll Zoom Smoothness.
The higher the smoothness the longer and smoother the scrolling is.
Remove Relative Sensitivity Gradient to reduce down to just the one
Relative Sensitivity setting which can be disabled by setting the slider to 0.
When letting go of the zoom key or toggling zoom off whilst scrolled in,
the normal zoom out transition is used with the same amount of time as if you weren't scrolled.
Increased number of scroll steps to 30.
Apply function to scroll zoom steps to make the first few steps smaller
and the last steps larger to create a more linear effect.