GitLab

* add support for latest dropout version

* clang format

* fix a build error

* fix a cppcheck error

* add bool type

* code backup

* code backup

* clang format

* fix build warnings

* clang format

* add the equal operator

* add the equal operator

* clang format

* remove unnecessary code

* refine unit tests

* clang format

* fix review comments and a bug

* clang format

* additional changes

* clang format

* remove unnecessary changes

* remove unnecessary changes
Co-authored-by: Paul Fultz II <pfultz2@yahoo.com>