use scale flag for no-fit and customizing zoom

[gavin-ts]

Summary

Add --scale flag to replace --no-fit (--scale=1) and customize zoom.

Details

• fixes Static diagram sizing option #1080
• covers the --no-fit functionality from revive no fit to screen #1346 and Add option for fit to screen #721 with scale=1
• allows users to adjust "default zoom" without relying on browser zoom
• thanks to @bluemir for initial --no-fit setup

e.g. scale=1

e.g. scale=0.5

[pangloss]

Thanks, I'm using this now and it works great!

One minor nit: --scale doesn't show up in the commandline help. Perhaps other options are missing, too?

[alixander]

@pangloss is your version up to date?

[pangloss]

Oh... yeah it is there. 😆