Consider adding separation when stats are maximally compressed

[dev-msp]

There's a rather unfortunate coincidence where "min" is both the name of a stat and a stat unit, so that when the frame is resized small enough, it looks very much like the last value was N minutes vs ms. Seems the best fix would involve some 1-char separator between stats (|, maybe?), but no strong opinion.

[fxnn]

I want to add to this -- there are other issues with the numbers on small screens.

• There's a space between the keyword and its value, but no space between the value and the next keyword.
  • This violates the visual principle that things that belong together should also be grouped together in terms of spacing.
  • You might wonder, Is the avg now 11.333 or 3.579?
• As OP already pointed out, the previous problem also leads to units and the following key collapsing.
  • Did the last sample take 1.882min (i.e. minutes)?
  • What does mmax mean?
  • And what is mjtr?
• Often, the units are missing entirely, and it's hard to tell whether we're talking microseconds, milliseconds, seconds or even minutes.

In my mind:

• there should always be a space between a value and the follow-up key,
• there should always be a unit behind the number,
• there should always be at least, say, 3 digits + decimal place per value; however,
• the space between keyword and the following value is optional, and
• if the screen gets too small to follow these rules, then the end of the line should simply be cut-off.