0.4.0

• #213:
  Fix #207.
  Frame range needs to be open at the end, as the documentation says.
  Add FrameUtils class that operates with a valid frame range (based on
  user-specified boundaries) and contains methods to compute current and
  next frame.
• #217:
  Improve #177 by moving the first ray's samples on the boundary of the volume
  AABB
• #188:
  Fix #180, rendering has artifacts when the camera is inside
  the volume.
• #185:
  Fix #179, the rendering is updated according to the
  latest frustum
• #181:
  Fix #114, rendering artefacts with screen-aligned bricks caused by
  division by zero with axis aligned rays in the shader
• #177:
  Ray sampling is adapted to the volume size to prevent
  artifacts
• #168:
  Use simulation widget (from the MonsteerQt library) in livreGUI
• #165:
  UVF time support added
• #145:
  Added multisampling per pixel and sparsity parameter for memory datasource
• #105:
  Fix 32 bit issue with REST jpeg image request
• #101:
  Implement event-driven rendering
• #75:
  Fix blocked application while waiting for data in asynchronous mode
• #86:
  Removed obsolete limitation to open only regular power-of-two volumes
• #84:
  Cache statistics are printed when showing statistics (press 's' key)
• #73:
  Merge dataCache and textureDataCache
• #78:
  New command line parameter to load a transfer function from file (".1dt" file
  extension, based on the format used by ImageVis3D)
• #75:
  Separate ZeroEQ communication to class zeq::Communicator
• #88:
  Fix LIV-157
  rendering of overlapping LOD nodes from different levels