* Adding support for AprilTag v3 library
* New parameter: Marker/Strategy (default opencv-aruco as before). Optimized multicameras marker detection (do only once with stitched image)
* Exposed all AprilTag parameters. Sharing Marker/Dictionary between opencv and apriltag implementation. Added new Marker/Lengths parameter.
* Support AprilTAg library not built with aruco
* cleanup
* Added marker range support
* Make apriltag detection in same orientation than opencv
* fixed shenanigans when rendering markers with multi cameras
* Don't update odom cache (localization mode) when not moving (detecting loop/landmark or not)
* fixed some quirks (camera viewer + tag working)
* Setting quad decimate to 1 by default
* typo
* Implemented OptimizerG2O::loadGraph()
* added apriltag's aruco support info in the cmake config summary
* fixed warning
* fixed isam2 assert when using landmarks
* Fixed homography on multicam
* Adding marker detection time for convenience
* Added missing MIP 36h12 tag family in UI
* rtabmap-rgbd_camera: added width/height options,
* using CameraViewer for visualization by default (use -pcl option for old visualization).
* CameraViewer: added capture and render rate.
* Note that non-TOF orbbec cameras could not be tested.
* Working rtabmap_lidar-mapping example (live and pcap)
* finalizing merge, added some deprecated
* fixed build
* Working deskewing for Lidar + Camera/IMU (no camera pose correction yet) and Lidar + Odom Sensor in main UI.
* backward compatibility
* fixed some not used variable warnings, fixed qt build for lidar mapping example
* Refactored CameraMobile, added AREngine background support, fixed LidarVPL16 build error with PCL 1.8
* ARCoreJava: buffer last depth image in case its stamp i higher than pose stamp. CameraMobile: added pose buffer. SensorCaptureThread: to get pose, odomSensor should be explicitly set, but can be same as lidar or camera inputs.
* Working external lidar on iOS
* util3d::commonFiltering()/adjustNormalsToViewPoint() added organized cloud support. MainWindow: updated odomSensor setup
* fixed winsock include order
* reverted camera tool
* disable imu filtering when odom sensor is used
* Updated package version
* fixed windows build
* fixing more windows build erros
CameraRealSense2: added new warnings to debug easier timestamps problems.
GUI: added gravity visualization.
DbViewer: empty clouds in OctoMap mode have color depending on probability of occupancy.
Brought general changes from local xvision branch.
matlabbe