Split Pane Terminology

[cmbankester]

• [x] I am on the latest Hyper.app version
• [x] I have searched the issues of this repo and believe that this is not a duplicate

• OS version and name: Windows 10.0.16299
• Hyper.app version: 2.0.0-stable
• The issue is reproducible in vanilla Hyper.app: Is Vanilla

Issue

This is more of a suggestion (and an opinionated one, at that), but the terminology for splitting a pane (e.g. "Split Horizontally" and "Split Vertically") has always confused me. I can never remember if "horizontal" means that the operation will result in two panes in a row (horizontal) or two panes split by a horizontal line.

I always expect that it will do the opposite of what it actually does, and since there's a chance I'm not alone, I figured I'd bring it up here.

[KharmaScribbles]

For horizontal, think about the Horizon of the sun.. You see the horizon along the edge of a lake, for instance.

So the horizontal split will give you a window above and a window below.