A bugfix release for rjags

Several people have written in to tell me that rjags crashes if you  re-run a modelling script in the same R session.  The crash is caused by a memory management bug in the JAGS library that is triggered when you overwrite a  jags model object with a second call to the jags.model() function.

JAGS-1.0.1 fixes this problem.  Since the rjags version is tightly linked to the JAGS release number, you will also need to install rjags-1.0.1, even though this has no code changes compared with rjags-1.0.0.

People using only the command line interface can carry on using JAGS 1.0.0.

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