1.12.1 (2018-05-06)
  * Fix a regression causing the allocation of a very large vector (issue #29)

1.12.0 (2018-05-05)
  * Fix bug that crashed DeLong calculations when predictor had near-ties close to the floating point precision limit that were rounded back to a predictor value (issue #25)
  * Fix bug that crashed 'ci.auc' and 'var' if 'direction' was ">" and 'percent=TRUE' (issue #25)
  * Fix bug causing 'ci' to return 'NaN' values with 'method="delong"' when cases or controls had a single observation (issue #27)
  * Fix 'power.roc.curve' failed with curves having 'percent=TRUE'
  * Fix 'ci(..., of="coords")' returned the 'ci' function instead of the CI
  * C++ code now check for user interrupts regularly with Rcpp::checkUserInterrupt()
  * Better error message for 'ci.coords' attempting to return 'threshold'
  * New algorithm = 5 (used by default) chooses the algorithm based on the number of thresholds to avoid worst case with algorithm = 3

1.11.0 (2018-03-24)
  * Added argument 'legacy.axes' to 'ggroc'
  * Fix NOTE about 'apparent S3 methods exported but not registered' in 'R CMD check'

1.10.0 (2017-06-10)
  * Basic ggplot2 support (one and multiple ROC curves)
  * Implement 'precision' and 'recall' for 'coords'
  * Fix: properly handle NAs in cases when passing cases/controls to 'roc' (thanks Thomas König for the report)
  * Fix various minor bugs detected with new unit tests
  
 1.9.1 (2017-02-05)
  * Fix: 'subset' and 'na.action' arguments now handled properly in 'roc.formula' (thanks Terry Therneau for the report)
  * Added policies to handle the case where a ROC curve has multiple "best" threshold in 'ci' (thanks Nicola Toschi for the report)
  * Support 'xlim' and 'ylim' gracefully in 'plot.roc'
  * Improved validation of input class 'levels' and 'direction'; messages when auto-detecting, use 'quiet' to turn on
  * Removed extraneous 'name' attribute on the 'p.value' (thanks Paweł Kleka for the report)
  * Faster DeLong algorithm (code contributed Stefan Siegert)

1.8 (2015-05-04)
  * NAMESPACE now properly exports the methods as S3 methods.
  * Now uses and works with 'requireNamespace'
  * Add ability to supply two ordered factors with identical levels as control / cases
  * Deprecate dangerous use of a matrix as response / predictor with a warning
  * Forward 'best.method' and 'best.weights' arguments to 'coords' in 'ci.thresholds'
  * Fix CITATION file as per CRAN request
  * pAUC correction is undefined for partial AUC below the diagonal (result < 0.5) and now returns NA (with a warning). Thanks Vincenzo Lagani for the report.

1.7.3 (2014-06-14)
  * Fixed AUC of binomial-smoothed ROC off by 100^2 (thanks Bao-Li Chang for the report)
  * Fix print of logcondens-smoothed ROC

1.7.2 (2014-04-05)
  * Fixed bug where 'ci.coords' with 'x="best"' would fail if one or more resampled ROC curve had multiple "best" thresholds
  * Fixed bug in 'ci.coords': passing more than one value in 'x' now works
  * Fixed typo in documentation of 'direction' argument to 'roc' (thanks Le Kang for the report)
  * Add a warning when computing statistics of ROC curve with AUC = 1
  * Require latest version of Rcpp to avoid weird errors (thanks Tom Liptrot for the report)

1.7.1 (2014-02-20)
  * Close SOCK cluster on Windows with parallel=TRUE
  * Fixed really use algorithm 1 when microbenchmark fails

1.7 (2014-02-19)
  * Faster algorithm for DeLong 'roc.test', 'power.roc.test', 'ci.auc', 'var' and 'cov' function (no large matrix allocation)
  * Handling Math and Operations correctly on 'auc' and 'ci' objects (see '?groupGeneric.pROC')
  * The 'formula' for 'roc.formula' can now provide several predictors and a list of ROC curves will be returned
  * Fixed documentation of 'ci.coords' with examples
  * Fixed binormal AUC computed with triangulation despite the claim in the documentation
  * Fixed unstated requirement on Rcpp >= 0.10.5

1.6.0.1 (2013-12-28)
  * Removed erroneous error message displayed when predictors and responses were not vectors

1.6 (2013-12-26)
  * New 'power.roc.test' function for sample size and power computations
  * New 'cov' and 'var' functions supports new "obuchowski" method
  * New 'ci.coords' function to compute CI of arbitrary coords
  * 'coords' accepts new 'ret' value "1-accuracy"
  * Introducing various algorithms to compute sensitivities and specificites, with a more vectorized code or Rcpp. See 'algorithm' in ?roc for more details on the trade-offs of the different methods.
  * Faster algorithm for DeLong 'roc.test', 'ci', 'var' and 'cov' function (thanks Kazuki Yoshida).
  * 'are.paired' now also checks for identical 'levels'
  * Fixed a warning generated in the examples
  * Fixed several bugs related with 'smooth.roc' curves
  * Additional input data sanity checks
  * Now requires R >= 2.13 (in fact, since 1.5.1, thanks Emmanuel Curis for the report)
  * Progress bars now defaults to text on Macs where 'tcltk' seems broken (thanks Gerard Smits for the report)

1.5.4 (2012-08-31)
  * Running less smooth.roc examples with logcondens because they take too much time (requested by Uwe Ligges)

1.5.3 (2012-08-31)
  * AUC specification was lost when roc.test, cov or var was passed an 'auc' object.
  * Correct computation of "accuracy" in 'coords' (thanks to Kosuke Yoshihara for the report)

1.5.1 (2012-03-09)
  * Faster loading of the package (thanks to Prof Brian Ripley and Glenn Lawyer for the report)

1.5 (2011-12-11)
  * New 'cov' and 'var' functions
  * 'coords' accepts new 'ret' values: "accuracy", "tn", "tp", "fn", "fp", "npv", "ppv", "1-specificity", "1-sensitivity", "1-npv", "1-ppv", "npe" and "ppe"
  * New 'legacy.axes' argument to 'plot' 1-specificity rather than specificity
  * New 'axes' argument to turn off the plotting of the axis
  * New 'logcondens' and 'logcondens.smooth' (Univariate Log-Concave Density Estimation) smoothing methods
  * New function 'has.partial.auc' to determine if an AUC is full or partial
  * New argument 'drop' for 'coords'
  * 'auc' and 'multiclass.auc' objects now also have secondary class 'numeric'
  * Updated load call
  * Delong's CI reversed in ROC curves with direction=">"
  * Delong's CI AUC returned values > 1 or < 0 in some rare cases
  * Minor improvements in documentation

1.4.4 (2011-08-09)
  * Fixed alternative for one-tailed tests (thanks to Lisa Koch for the report)
  * Removed COPYING file to fix a warning in r-devel.

1.4.3 (2011-03-17)
  * Updated citation

1.4.2 (2011-03-03)
  * Fixed bootstrap 'roc.test' generating NAs when 'smooth.roc's were used with 'reuse.auc=FALSE' (thanks to Buddy for the report)
  * Documented a warning that was missing in roc.test
  * Updated citation
  
1.4.1 (2011-01-27)
  * 'venkatraman''s test for unpaired ROC curves
  
1.4 (2011-01-21)
  * 'smooth' does not apply on 'ordered' factors anymore
  * Multi-class AUC support
  * Can choose how 'best' thresold is determined ('best.method' and 'best.weights' in 'coords' and 'print.thres.best.method' and 'print.thres.best.weights' in 'plot.roc')
  * Minor fixes in documentation
  * 'print' now prints the response instead of "response" and more informative data in 'htest's
  * Bootstrap with 'ci.auc' consumes much less memory
  * Unpaired bootstrap and DeLong's test
  * Specificity and sensitivity tests (in 'roc.test')

1.3.2 (2010-08-24)
  * 'print.auc' printed incorrect CI in 'plot.roc' (thanks to Alexander B. Leichtle for the report)
  * Failed to detect local maximas in 'coords' when 2 or less points were selected
  * Don't consider ROC extremities (+-Inf at 1.0/0.0 SE<->SP) as local maximas

1.3.1 (2010-08-18)
  * Sensitivity and specificity were inverted in coords when results were reported as list
  * Faster checks with '\dontrun{}' in 'roc.test'

1.3 (2010-08-13)
  * '...' not passed correctly in 'plot.ci.se' with 'type="bars"' resulting in an error
  * CI is not re-computed by default in 'smooth.roc'. You can still turn it on with 'reuse.ci=TRUE'
  * New function 'are.paired'
  * Local maximas could be incorrectly detected in 'coords' (and 'plot.roc') with 'predictor's containing more than 2 levels.
  * New method 'venkatraman' for 'roc.test'
  * MASS and tcltk packages are now only suggested instead of required

1.2.1 (2010-05-11)
  * Handle 'method' arguments for 'smooth.roc' and 'ci.auc' separately in 'roc.default'
  * Added 'auc.polygon.*' and 'max.auc.polygon.*' arguments for 'polygon' in 'plot.roc'

1.2 (2010-05-09)
  * Added DeLong method in 'ci.auc'
  * Return value of 'ci.auc' does not contain an 'aucs' item anymore
  * Put most examples with bootstrap within '\dontrun{}' blocks for faster (but less useful) checks execution

1.1 (2010-05-05)
  * Added 'lines.roc' functions for ROC
  * Added 'type' argument for both 'lines.roc' and 'plot.roc'
  * Added 'print.auc.col' argument to 'plot.roc'
  * Fixed a warning in 'roc.test.default' when the class of 'predictor1' had several elements
  * Fixed an encoding failure during the checks on MacOS X

1.0.1 (2010-04-28)
  * Reduced examples execution time. Added low 'boot.n' in the slowest examples and 'reuse.auc' and 'reuse.ci' arguments in smooth.roc.roc

1.0 (2010-04-27)
  * First public release
