Expression templates: unqualified calls to min/max functions in VerticalOperations.h

Jakub Klinkovskýrequested to merge
JK/expression-templates into develop
  • Removed unnecessary qualified lookup from unit tests
  • Switched to unqualified calls to min/max functions in VerticalOperations.h to support argument-dependent lookup
  • Fixed some compiler warnings from -Wextra

Merge request reports