Updated Plotter

Made the visual.Plotter a bit nicer, reverting back to vedo to make using callbacks a bit easier and allow hover data when the mouse pointer is over a well. I'll extend this for imported formation tops, faults etc.

Also updated the conversions between decimal and (degrees, minutes, seconds) lon/lats to handle when no direction is provided.

The new Plotter might break existing code, so this has got a major version number update.

What's Changed

• Enhancement/visual vedo by @jonnymaserati in #173

Full Changelog: v0.7.8...v0.8.0