Added GroupMembershipMatrix() function to construct
group membership matrices for hierarchical testing algorithms.
Added a vignette to demonstrate identification through group testing.
Added a NEWS.md file to track changes to the
package.
Added security to informativeArrayProb(),
halving(), TOD(), Sterrett(),
opChar1(), opChar2(), OTC1(),
OTC2(), gtSim(), gtReg(), to
ensure that probability, sensitivity, and specificity inputs are between
0 and 1 and the correct dimensions.