The setup process with this changed file are not tested yet, but at
least mandatory updates are done.

Also: Add dependency 'pyqtwebengine' to the recipe

Note, that:
- pyqtwebengine is added as explicit requirement, because it turned out
  that it is not pulled as indirect dependency (any more?) in Conda
  environments, it might be an issue with setup.py too.
- vispy is forced to versions not older than 0.10.0, just to reduce the
  number of 'supported' combinations.
  Forcing to even 0.11.0 or 0.12.0 is avoided since both have bugs, e.g.
  0.12.0 introduces the issue
  #159 Markers with percentage-based size appear huge, or don't show up in geos projections, depending on vispy version