Merge branch 'update/gitlab-ci' into 'develop'

.gitignore

.gitlab-ci.yml

.gitlab-ci/clang10-mpi-coverage.yml

.gitlab-ci/clang10-mpi-debug.yml

.gitlab-ci/clang10-mpi-release.yml

.gitlab-ci/clang10-seq-coverage.yml

.gitlab-ci/gcc10-mpi-coverage.yml

.gitlab-ci/gcc10-mpi-debug.yml

.gitlab-ci/gcc10-mpi-release.yml

.gitlab-ci/gcc10-seq-coverage.yml

.gitlab-ci/gcc10-seq-release.yml

.gitlab-ci/gcc8-seq-coverage.yml

.gitlab-ci/gcc8-seq-dbg.yml

.gitlab-ci/gcc8-seq-release.yml

CMakeLists.txt