Feature: split-step-resize

[qwerasd205]

We currently have window-step-resize which is very nice as it allows you to resize the window in steps while maintaining balanced padding on your surfaces (thanks to window-padding-balance), however panes are still resized smoothly, causing the contents to bounce as you resize if you have balanced padding enabled. An option to have split dividers also drag in 1-cell increments would be very nice.

[mitchellh]

Sounds good to me, approved.

[gpanders]

Note for anyone who attempts to implement this: splits already respect the window-step-resize option when using the resize key bindings, so that will need to be changed to look at split-step-resize instead.

[mitchellh]

Note for anyone who attempts to implement this: splits already respect the window-step-resize option when using the resize key bindings, so that will need to be changed to look at split-step-resize instead.

I think the keybindings can always resize by step size. It seems tedious for them to resize smoothly since a key press/release is so discrete compared to a mouse drag.