Initial commit

this is a fully-featured version used for the Price paper (currently
at Sam's office)
Minor modifications
Added relatedness option in the parameters
Fixes small error in pool_empty()

Adds dps executable in .gitignore
Merges changes in order to branch into devel again
Implements relatedness calculations (whole-group only)
Completes implementation of relatedness calculations (both whole-group
and others-only)

Removes --relatedness option from params (rel. calc. is now default)
Fixes a bug in the calculation of OO mean (in cell.c)
Fixes bug in cluster post-processing of results
Minor modifications in R plotting functions
Merges relatedness branch
Adds extinction to PP processing (dps.r)
Adds PP comparison function between NO-CNC and CNC (dps.r)
Changes/improves file organization
Cleans up R/dps.r
Adjusts C code indentation
Decomposes calculation of relatedness into cov and var
Cleans up R/paper_*.r source code
Pulls in all external dependencies (utils), so that the repo is now autonomous
Corrections in README