Version 3.5.0

• Changed: grpreg()$loss is no longer returned
• New: plot_spline() now has "add" option so that splines can be added to existing plot
• Fixed: Loss/deviance now used consistently throughout; see #52
• Fixed: Fixed some broken URLs
• Fixed: Fixed bug in which mean was added twice for cv.grpreg()
• Fixed: Bug in which SNR could be infinite
• Fixed: Passing seed no longer affects global environment
• Fixed: cv.grpsurv() now sets default group if not supplied
• Fixed: No more error if response is constant; see #46
• Fixed: No more error if single lambda supplied
• Internal: Updated citation format to bibentry()
• Internal: Now using R_Calloc for _R_USE_STRICT_R_HEADERS_ compatibility
• Documentation: Now using roxygen
• Documentation: Updated online documentation on penalties

Version 3.4.0

• New: Suite of tools for additive modeling, most notably expand_spline() and plot_spline() (thank you to Ryan Kurth for her work on this project)
• New: grpreg() now returns linear.predictors object
• New: grpreg() and grpsurv() now have residuals() methods
• New: predict.grpsurv() can now predict cumulative hazard (type="hazard")
• New: Can now perform cross-validation with group bridge in cv.grpreg()
• Changed: fit$y now returns original y, not centered y
• Changed: grpsurv() now consistent with grpreg() in terms of returning deviance (2*loss) and groups as factors
• Fixed: predict() no longer converts factors to strings if type="groups"
• Fixed: grpsurv() works correctly if a single feature is supplied

Version 3.3.1

• Fixed: AUC() now compatible with survival 3.2.10
• Internal: Fixed memory leak

Version 3.3.0

• Fixed: sqrt(K) no longer hard-coded into discarding rules (thank you to Dan Kessler for pointing this out)
• Testing: Now uses the tinytest package
• Documentation: Removing references to grpregOverlap (hope to merge)

Version 3.2.2

• Change: Better error detection for ill-conditioned, unpenalized matrices
• Fixed: loss.grpsurv() now works for total=FALSE
• Internal: Lots of internal changes for cleaner, more reliable code
• New version numbering system

Version 3.2-1

• Change: Cross-validation now balances censoring across folds for survival models
• Fixed: Leave-one-out cross-validation now works correctly for logistic regression

Version 3.2-0

• New: cv.grpsurv now calculates SE, with bootstrap option
• Change: R² now consistently uses the Cox-Snell definition for all types of models
• Change: Survival loss now uses deviance
• Change: cv.grpsurv now uses 'fold', not 'cv.ind', to declare assignments
• Fixed: cv.grpreg now correctly handles out-of-order groups for Poisson
• Fixed: cv.grpsurv now correctly standardizes out-of-order groups
• Fixed: grpreg no longer returns loss=NA with family='binomial' for some lambda values
• Internal: SSR-BEDPP optimization reinstated after bug fix
• Internal: C code for binom/pois combined into gdfit_glm, lcdfit_glm
• Documentation: Lots of updates
• Documentation: vignette now html (used to be pdf)
• Documentation: pkgdown website

Version 3.1-4

• Fixed: Works with arbitrarily "messy" group structures now (constant columns, out of order groups, etc.) due to restructuring of standardization / orthogonalization; Fixes #17
• Internal: SSR-BEDPP rule turned off due to bug

Version 3.1-3

Internal: Fixes C bug involving | instead of ||

Version 3.1-2

• Fixed: Bug #15 in applying screening rules with group lasso for linear regression with user-specified lambda sequence (thank you very much to Natasha Sahr for pointing this out)