Add voronoi computation
Added isoline view
Added caching for color maps
Defer updating jnd panel
Merge branch 'master' into voronoi

Conflicts:
	src/main/java/main/JndViewPanel.java
Bilinear interpolation
Reorganized cached color maps
Fixed accuracy issues in some colormaps
Add circular probing for jnd view
Avoid unneccessary redraw
Use floats in cached images
Clean up jnd view
Merge pull request #5 from simonthum/master

Teuling maps and some miscellany
Fixed merge conflicts
Added metric quality table
Added proper color ramp
add new helper lines