Long ago, boost/optional was replaced with (c++17) optional (in public headers) in order to not publicly have boost as a project dependency. This was before boost-odeint was added. With that module enabled, boost must be present in public headers anyway, so we might just use boost optional.
Long ago, boost/optional was replaced with (c++17) optional (in public headers) in order to not publicly have boost as a project dependency. This was before boost-odeint was added. With that module enabled, boost must be present in public headers anyway, so we might just use boost optional.
This might fix #61