Added a column-oriented table class

No it doesn't work yet
Styling fix

Panel now inherits the background color from its container.
Added a stylesheet and a couple of examples.
Merge remote-tracking branch 'origin/master' into dev
Introducing typed tables

Needs some further cleanup but effective!
Probe-based implicit sampling correction

Prior to sampling implicit surfaces, a small probe sample is launched.
The seed points are then generated around the mean of the probed points
rather than around zero.
Also removed some debugging console logs.
Optimized implicit sampling

Mostly object reusing. Huge, huge performance gains.
Also added a proxy for undefined columns in table.
WTF