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+2003-03-28    <brouard@BROUARD>\r
+\r
+       * imach.c (Module): In version up to 0.92 likelihood was computed\r
+       as if date of death was unknown. Death was treated as any other\r
+       health state: the date of the interview describes the actual state\r
+       and not the date of a change in health state. The former idea was\r
+       to consider that at each interview the state was recorded\r
+       (healthy, disable or death) and IMaCh was corrected; but when we\r
+       introduced the exact date of death then we should have modified\r
+       the contribution of an exact death to the likelihood. This new\r
+       contribution is smaller and very dependent of the step unit\r
+       stepm. It is no more the probability to die between last interview\r
+       and month of death but the probability to survive from last\r
+       interview up to one month before death multiplied by the\r
+       probability to die within a month. Thanks to Chris\r
+       Jackson for correcting this bug.  Former versions increased\r
+       mortality artificially. The bad side is that we add another loop\r
+       which slows down the processing. The difference can be up to 10%\r
+       lower mortality.\r
+\r
+2002-05-30    <brouard@BROUARD>\r
+\r
+       * \r
+\r
+       * imach.c (Module): Add correlation matrix of one-step\r
+       probabilities and covariance matrix\r
+\r