Allowing negative d-primes for AUC, adding to NEWS file, adding testthat tests and bumping version to 1.4-1

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/sensr@67 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
Also updating the AUC man page to reflect its actual behaviour

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/sensr@68 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
Making AUC work with scale argument (was somehow deleted at some point)

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/sensr@69 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
Correcting formulae for beta-binomial models in manual

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/sensr@70 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
Adding d.prime0 (value of d-prime under the null hypothesis) as an

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/sensr@71 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
Minor sign corrections to the beta-binomial formulae in man-pages

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/sensr@72 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
Adding tests of likelihood evaluation of beta-bin and chance-corrected beta-bin models

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/sensr@73 edb9625f-4e0d-4859-8d74-9fd3b1da38cb