[Bug] Zoom In and Out with mouse wheel don't have the same ratio

[FlachyJoe]

Hi,

With standalone v0.7 when a patch is zoomed it's not possible to go back to 100% with mouse wheel because of the ratio not symmetric for in and out.

50.0% [+] 62.1% [-] 52.0% [+] 64.6% [-] 54.0% etc.

[timothyschoen]

That's interesting, the biggest problem here is that the scroll steps I get on Windows are way larger than on macOS, and they vary much more in amount. I'll try to fix that!

You can revert to 100% by clicking the percentage in the main menu as well, btw.