Merge pull request #332 from SteveMacenski/smart_to_navfn

.travis.yml

doc/design/ROS_COMPARISON.md

nav2_bringup/launch/core.launch.py

nav2_bringup/launch/nav2_bringup_launch.py

nav2_navfn_planner/CHANGELOG.rst

nav2_navfn_planner/CMakeLists.txt

nav2_navfn_planner/README.md

nav2_navfn_planner/include/nav2_navfn_planner/navfn.hpp

...avfn_planner/include/nav2_navfn_planner/navfn_planner.hpp

nav2_navfn_planner/package.xml

nav2_navfn_planner/src/main.cpp

nav2_navfn_planner/src/navfn.cpp

nav2_navfn_planner/src/navfn_planner.cpp

nav2_navfn_planner/test/.gitignore

nav2_system_tests/src/planning/test_planner_launch.py

navigation2/package.xml