Introduced new data folder and a max test (highest number of unique branch lengths found in PhyloFun on blast e-value <= E-03
Cleaned up code and provided R function for every existing Rcpp function.

R functions and arguments are named exactly the same as in C++.
Returning proper SEXP instead of Rcpp classes.
Wrapping returned values.
Ready to be included in pure R PhyloFun.

Note: Still performing much faster than parallel implementation.