4.6.0

1. Improvements in TGeo drawings
   • support of large (~10M volumes) models, only most significant volumes are shown
   • one could activate several clip planes (only with WebGL)
   • interaction with object browser to change visibility flags or focus on selected volume
   • support of floating browser for TGeo objects
   • intensive use of HTML Worker to offload computation tasks and keep interactivity
   • enable more details when changing camera position/zoom
   • better and faster build of composite shapes
2. Improvements in histograms 3D drawing
   • all lego options: lego1..lego4, combined with 'fb', 'bb', '0' or 'z'
   • support axis labels on lego plots
   • support lego plots for TH1
3. Improvements in all 3D graphics
   • upgrade three.js to r79
   • use of THREE.BufferGeometry for all components
   • significant (up to factor 10) performance improvement
4. Implement box and hbox draw options for TH1 class
5. Implement drawing of axes ticks on opposite side (when fTickx/y specified)
6. Preliminary support of candle plot (many options to be implemented)
7. Update draw attributes (fill/line/position) when monitor objects