# Release v0.13.0 ## Features - `multi_double` module - Added `oct` class for octuple-precision floating-point arithmetic using four double values. ## Improvements - `multi_double` module - Small performance improvements in mathematical functions of `quad` class. - Improved performance of `quad` class in MSVC. - `regularization` module - Removed use of deprecated API in Eigen library. - `ode` module - Fixed some warnings in Doxygen.