Changes in version 1.2.1.9000 - Implemented method = "glm.fit2.Matrix", for large design matrices. Changes in version 1.2.1 (2018-08-11) - Changed glm2 to call the fit function without singular.ok when the R version is less than 3.5.0, allowing backwards compatibility to 3.2.0. (Thanks to Paul Bailey for the suggestion) Changes in version 1.2 (2018-05-25) - glm2 and glm.fit2 now accept singular.ok argument, for compatibility with glm in R 3.5.0. Changes in version 1.1.3 (2017-10-24) - Removed some examples for compatibility with changes to glm in R 3.5.0. Changes in version 1.1.2 (2014-05-07) - Pass singular.ok = FALSE to lm.fit so that singular models will stop with an error. Changes in version 1.1.1 (2012-12-07) - Extract the qr component correctly.