Describe the bug
If you zoom in and zoom out using the smoothing option in the title, Wayfire will crash, presumably due to easeOutElastic producing interpolation values outside of the 0-1 range.

To Reproduce
Steps to reproduce the behavior:

1. Enable the Zoom plugin
2. Zoom in, then fully back out
3. Wayfire crashes

Expected behavior
No crashing occurs, and the space at the edges where there's no output to display is filled with black or something.

Screenshots or stacktrace
log.txt

Wayfire version
0.10.0, from the AUR