Shrink/shorten columns on narrow screen

[applejag]

We don't want wrapping, as that's a big headache to render, and you can't really copy-paste from the terminal correctly then.

Instead, let's shrink columns when there's too much information.

Some columns should not get shrunk:

• any that's not a static string (e.g "Age" is a timestamp)
• if it only contains digits (i.e it's an integers)

Algorithm, when we need to shrink:

1. Find the widest column
2. Find the widest values in that column
3. Remove two characters in the middle, replacing with ellipsis (…)

Repeat above until we fit the width.

As an optimization, we could have this as a custom type that only deals with slices, like so:

type ShrunkenString struct {
	Start string
	End   string
}

func (s ShrunkenString) String() string {
	return s.Start + "…" + s.End
}

And then while shrinking multiple times, we don't have to generate a bunch of intermediate strings before we get the final value.

[applejag]

Another idea to add on top: the current column spacing is 3 spaces. Could reduce down to 2 (on demand) to help save some space. Would be helpful when the output is just 1-2 characters too wide