Added OpenCL support and knn_data_ocl, which allows OpenCL acceleration of k-nearest neighbors computations (GPU, CPU, etc.)
Added code for dijkstra's shortest paths.
Added sparse data vector processing code.
Working on command-line options and final OpenCL infrastructure.
Added command-line parsing support for options, extended command-line help, etc.
Still working on command-line parsing.
Command-line processing for knn codes fixed.
More command-line processing code.
Fixed some basic bugs from the new code and updated examples to reflect current usage.
Fixed more command-line code and added an example of how to use the current contact distance measure.
More command-line and fixes.
More command-line code and adjustment to examples to include standard spectral approach in comments.
Timing code for sparse matrix generation.
Fixed timing bug that cause bad estimates for making sparse matrices.
Fixed up cmake file a bit more...
R code updates.
Fixing up contact codes and examples for new release.
Rename of contact_distance to contact_profile
Changed version number in files for release.
Moving some code around for readability.