# picreg 0.1.3

## Bug fixes

* Resolved a C++ One Definition Rule (ODR) violation reported under
  link-time optimization (LTO): the file-local helper structs in
  `fista.cpp` and `fista_cox.cpp` now have internal linkage (anonymous
  namespaces).

## Minor improvements

* `coef()` now returns a one-column **sparse matrix** instead of a two-column data frame. 
  Zero coefficients are printed as `.`, which keeps the display compact in high dimensions.
  
* Added a `summary()` method for `pic` fits.

* `intercept = FALSE` is now permitted for every family. Previously it raised
  an error for non-Cox families when `standardize = TRUE`. When
  `intercept = FALSE`, the data are assumed to be centered.

* Standardized the input-validation error messages (consistent back-quoting
  of argument names and `call. = FALSE`).
