2022-10-04 Wenjie Wang * Fixed the issues found by the rchk tool (thanks, Tomas Kalibera). 2021-06-20 Jun Yan * Used symbol registration (long overdue). * Removed unused variables in ee.cc. * Changed maintainer email to jun.yan@uconn.edu. 2007-10-20 Jun Yan * Release 0.2-2 includes goodness-of-fit test for comparing two models which are different only in the specification of one coefficient: time-varying or time-independent. 2007-09-28 Jun Yan * Release 0.2-1 includes a test version of smoothing the time varying coefficient estimate with kernel methods. 2007-06-14 Jun Yan * Release 0.1-2 is for Arthur Allignol to test with his data; it is almost ready for public release. * Nonparametric significance test, parametric constant fit, and goodness-of-fit tests for constant fit are available. The tests implemented are integral test and bootstrap test. * The ci.plot function is documented.