After this change 6df3e602a7 (diff-24324a084e511502d7f34054ec31b353L50), an explicit include for KdTree is needed.
It was formerly a transitive include via pcl/surface/mls.h - pcl/search/pcl_search.h - pcl/search/kdtree.h - pcl/kdtree/kdtree_flann.h.
* Deriving typedef from pcl type
* Explicit boost shared_ptr for function parameters
* Use boost::shared_ptr instead of PCL::Ptr
* Implementing boost-std compatibility
* Using the compatibility layer
* pcl_conversion to ros2
* travis for ros2 and fixed cmakelists
* exporting dependencies
* updated travis
* fixed smaller things
* added colcon ignore to meta package
* merge pcl_conversions.h with version released in Dashing
* merge test script, CMakeListst, package.xml
* append authors, clean up
* PR feedback
* fixed PR comments
* fixed PR comments, cmakelists message_filters, reverted type masq, added maintainer
* removed dashing and made ros_distro matrix env
```
% catkin lint .
pcl_ros: error: nodelet plugin file 'plugins/nodelet/libpcl_ros_features.xml' is not installed to ${CATKIN_PACKAGE_SHARE_DESTINATION}
pcl_ros: error: nodelet plugin file 'plugins/nodelet/libpcl_ros_filters.xml' is not installed to ${CATKIN_PACKAGE_SHARE_DESTINATION}
pcl_ros: error: nodelet plugin file 'plugins/nodelet/libpcl_ros_io.xml' is not installed to ${CATKIN_PACKAGE_SHARE_DESTINATION}
pcl_ros: error: nodelet plugin file 'plugins/nodelet/libpcl_ros_segmentation.xml' is not installed to ${CATKIN_PACKAGE_SHARE_DESTINATION}
pcl_ros: error: nodelet plugin file 'plugins/nodelet/libpcl_ros_surface.xml' is not installed to ${CATKIN_PACKAGE_SHARE_DESTINATION}
pcl_ros: error: unconfigured build_depend on 'message_filters'
catkin_lint: checked 1 packages and found 6 problems
catkin_lint: 40 notices have been ignored. Use -W2 to see them
```
