0.1.2:

* added check that 'blockIndex' does not put one outside range of 'x', 'weights', or 'proportionMissing'

* added check for NA in 'blockIndex', 'x', 'xObs'

* report warning if risk ratio confidence interval optimization results in estimate of either endpoint of confidence interval equal to an endpoint of the interval (i.e., 'bounds' value) used for optimization

0.1.1: 

* first internal release
