-------------------
Changes in v1.1.0
-------------------
* Libraries employed -
  Qt 4.5.0
  glew-1.5.1
  netCDF v3.2
  libQGLViewer 2.3.1
  glut 3.7
  ImageMagick 6.2.9
  hdf 4.2r3

- Data now stored as single-byte per voxel instead of
  two-bytes per voxel.  Gradient magnitude is not saved
  in the preprocessed volumes.  The required magnitudes
  are evaluated as and when required.

- Import now stores only one-byte per voxel.

- 2D transfer function now available for 3-volume as well
  as 4-volume visualizations.

- by default lighting is switched on.
  diffuse/specular and emissive lighting is applied in
  default rendering mode.

- Depth cueing introduced.
  Use 'd' to toggle depthcueing. Depth cueing is switched
  on by default.

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* * * * * * * * * * * * *  * * * * * * * * * * * * * * * * * * * * * *
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-------------------
Changes in v1.0.1
-------------------
* Libraries employed -
  Qt 4.5.0
  glew-1.5.1
  netCDF v3.2
  libQGLViewer 2.3.1
  glut 3.7
  ImageMagick 6.2.9
  hdf 4.2r3


* Import -
  Import time series.  Requires a template .pvl.nc to get all the
  required information from.  This information is then used to
  process all the specified volumes in the time series.

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* * * * * * * * * * * * *  * * * * * * * * * * * * * * * * * * * * * *
----------------------------------------------------------------------

-------------------
Changes in v1.0
-------------------

* Libraries employed -
  Qt 4.5.0
  glew-1.5.1
  netCDF v3.2
  libQGLViewer 2.3.1
  glut 3.7
  ImageMagick 6.2.9
  hdf 4.2r3


* New Addition -
  Prithvi : Volume exploration and presentation tool for volumetric
  data over spherical grids.  This tool operates in a similar fashion
  to the Drishti Renderer.  The tool accepts the same inputs as the
  renderer - multiple volumes, time series and colour volumes can be
  visualized over sphere.


* Bug Fixes -
  Fixed crash while loading another project/volume in the current session.
  Background shadows now properly rendered.
  Interpolations in camera orientations now happen in more expected fashion.
  Fixed unexpected twists in tubes for paths removed. 
  Fixed crash when loading project with Gallery widget visible.


* Masks -
  Volume masks can now be used when multiple volumes are loaded.
  Currently mask data is available only for the first volume.


* Commands -
  saveopacityvolume : Save opacity information for the volume, based
  on current transfer function, as an unsigned byte raw volume.

  maskrawvolume : Save raw volume masked by opacity based on current
  transfer function.  Voxels with opacity 0 are saved as 0 and where
  opacity is non-zero, original raw values are saved.

  filter [no | mean | median ] : If subvolume selected cannot be
  accommodated in the texture memory it needs to be subsampled.  This
  subsampling can be done after filtering the data.  By default mean
  filter is applied.  To turn off filtering use <b>filter no</b>.


* Paths -
  display length
  arrow length
  half section
  extraction from raw data : useful in unrolling/straightening data.