v0.7.20

http://miew.opensource.epam.com/v0.7.20/

Added

• Add a separate setting for fog color (fogColor, fogColorEnable) and transparency
  (fogAlpha). Now it can be different from the background color and only shade a
  geometry behind the far plane instead of completely hiding it.
• Add ToonMaterial and depth-based outline full-scene effect for nice
  cartoon-like rendering.
• Add FlatMaterial, CarbonColorer, together with miew.motm() API method and
  motm script command for reproducing the amazing
  RCSB PDB Molecule of the Month style by David S. Goodsell.

Changed

• Ambient occlusion (SSAO) now uses a Normal screen buffer for precise per-pixel normals.
  This requires multiple render targets output (WEBGL_draw_buffers extension) .

Fixed

• Fix switching WebVR mode on and off.
• Fix wrong screenshot size on high resolution displays.
• Fix fog interpolation for sprites.
• Fix a background color not being restored from URL.

Internal

• Migrate parts of code to ES2015 syntax (modes/, colorers/, meshes/, geometries/, groups/, processors/).
• Update golden images for e2e regression tests.