equal keycode is 61 on firefox for MacOSX

[johanpoirier]

The = key is not working with Firefox on MacOSX.

See https://developer.mozilla.org/en-US/docs/Web/API/KeyboardEvent.keyCode, equal keycode is 61 and not 187 (other browsers).

There are issues with + and - too.

[bichotll]

I'm having the same problem. This library is not code updated from two years ago anyway.

[thenickdude]

Looks like someone added a fix for this in PR #154, I merged that locally and -/= are working for me now in Firefox (Mac OS X and Windows).