Release 1.0 (2013-07-23): one and two population t-tests implemented. Release 2.0 (2014-11-24): added ITPlmbspline and ITPaovbspline for testing functional ANOVA and linear models. Release 2.1 (2015-02-05): faster version of ITPlmbspline and ITPaovbspline functions. Release 2.1.1 (2022-05-04): minor fixes in the code.