Compact view

[alvarosabu]

Is your feature request related to a problem? Please describe.
For the same controls, Tweakpane is roughly half the height of Leches. I often find myself tweaking/removing controls to get Leches to fit in a window. That's a design tradeoff, but since I'm mostly working on docs/playground examples aimed at other devs, I'd trade whitespace/larger controls/larger type for having more controls "above the fold".