1.1-4 (20 Jan 2012)
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fixed NAMESPACE issue leading to global variable error(s)


1.1-3 (02 Sept 2011)
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Fixed a couple of bugs in the demos


1.1-2 (23 Aug 2011)
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Allowing one to fix parameters by specifying negative 
rates in the priors


1.1-1 (07 April 2011)
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Updated references for JCGS paper and email addresses
to Chicago Booth


1.1 (20 Sept 2010)
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Added sim correlation function for single index models


1.0 (30 April 2010)
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Initial version