Checking in MultSat.R failing model, and finished implementing ticket:54.
Updated documentation for mxEvaluate()
MxEvaluate now translates free parameter references.
More explicit about value types that are entered in MxRAMModels, and relaxed equality checking to ignore types on NAs.
Begin implementing summary() function.
Changed implementation of mxOption() such that dealing with missing keys is not a total hack. The interface is unchanged.