2010/07/20
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* Version 0.6
* add addmargins argument
* remove unnecessary rows in tabular function
* set data to NULL by default, so that remix(esoph$agegp ~ .) works

2010/06/03
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* Version 0.5-2
* Arguments passed to ... have no effect in functions that don't use
  these arguments. It means that: remix(data = esoph, probs = c(1/3, 2/3))
  works.
