ENMeval v0.3.1

o Changed the default behavior to use the 'maxnet' function of the 'maxnet' package instead of the 'maxent.jar' program, and removed the dependency on the 'rJava' package by default, among others.
o Added an algorithm slot to the ENMevaluation object.
o Added information on the aggregation factor(s) or number of k folds to the ENMevaluation object when relevant.
o Corrected use of 'corrected.var' in the 'tuning' function.
o Changed some column names in the @results table to be more intuitive and compatable with the R package, Wallace.
o Fixed broken URLs and now loading example data directly from RDS to avoid using GBIF (which is down sometimes).