v0.3-3 - 02/01/2012:
 - .First.Lib replaced by .onLoad, .Last.Lib by .onUnload

v0.3-2 - 01/25/2012: 
 - NAMESPACE added
 - In the C code, functions printf and exit replaced by Rprintf and error, respectively.
 - Minor cosmetic changes.

04/29/2004: Initial version