protect against bad values for certain params (#44)

This is a stopgap measure to prevent the extension from infinitely looping
if the user mistakenly gives a zero or negative value for zig-zag spacing
or running stitch length.

It's definitely not ideal -- the user is still allowed to enter invalid
numbers, but the extension just interprets any zero value as 0.01.  In
the future, I'll refactor things to add proper bounds-checking for
parameters and limit the values that can be entered in the UI.

0 files changed, 0 insertions, 0 deletions