Hi!
I would love to use your plugin, but it just crashes when I try to use it. I added the crash report maybe it is useful to you.
My specs:
Sketch 42 (latest)
MacBook Pro (Retina, 13-inch, Early 2015)
2,7 GHz Intel Core i5
8 GB 1867 MHz DDR3
macOS Sierra 10.12.2 (latest)
CrashReport.txt