0.8.0

• #394:
  Support closer visualization through dynamic near/far calculation
• #391:
  Remove samples per pixel option
• #386:
  • Fix GL texture upload 'blocking' rendering
  • Only upload 1 block per frame in async case to increase responsivness
  • Add idle rendering state which is active if user stops interacting;
    otherwise rendering takes minLOD level to speedup interaction
  • Fix reporting of cache sizes and hits
  • Add linear filtering support
• #382:
  Support data range selection in livreGUI
• #375:
  Add livre::DataSource::handles()
• #373:
  Fix concurrent send & receive from livreGUI, which lead to crashes on GUI
  and/or connected clients
• #372:
  Fix crash with histogram not being ready in synchronous mode while moving clip
  planes
• #370:
  Fix a crash due to a bug related to the include directive in glsl
• #368:
  Make "Show axes" available in livreGUI and python API
• #367:
  Add DataSourcePlugin::finishGL() to release OpenGL resources that are held
  by the plugin, e.g. Cubist
• #363:
  Add detailed information on the volume URIs to help, wrap help to
  current terminal size, remove config file support
• #365:
  Introduce livre::Engine to allow integration into Brayns
• #364:
  Fix multi-node setups
• #359:
  Fix exit crash
• #358:
  Fix bugs occuring with 16-bits and anisotropic raw volumes.
• #356:
  Implement element downscaling of raw data volumes