Major changes:
* small in documentation file fixed (for R 2.13.0 release)
* added in documentation that the default unit for the entropy
is "nats" (natural units), for "bits" one needs to set unit="log2".
R implementation of various estimators of entropy, such as the
shrinkage estimator by Hausser and Strimmer, the maximum likelihood
and the Millow-Madow estimator, various Bayesian estimators, and
the Chao-Shen estimator. It also offers an R interface to the NSB
estimator. Furthermore, it provides functions for estimating mutual
information.
