CHANGES IN 'ltsa' VERSION 1.46 (2015-08-21) o improved documentation exactLoglikelihood() o innovationVariance() CHANGES IN 'ltsa' VERSION 1.45 (2015-08-21) o new function exactLoglikelihood() o fixed warnings by adjusting namespace, importFrom("stats", "ARMAtoMA", "convolve", "fft", "rnorm", "toeplitz") CHANGES IN 'ltsa' VERSION 1.42,1.43,1.44 (2012-12-14) o minor documentation fixes CHANGES IN 'ltsa' VERSION 1.41 (2011-05-16) o minor issue with DHSimulate fixed CHANGES IN 'ltsa' VERSION 1.4 (2010-11-30) o fixed NAMESPACE problem