* added parallel planning to recovery tree

* make the parallel+recovery default

* remove simple navigator in factor of behavior tree

* removing things that depend on simple_navigator

* Fix line issue

* Removing unused variables.

* Pass a floating point value to log print instead of Duration object.

* Another unused variable.

* Removing incorrect use of std::move.

* Fixing inheritance problems.

* Negation needed to be outside of parens. Order of operation error

* diagnostic state was never pushed.

* Disable folding constant warning in eig3.c file. It's used all over.

* Refactor nav2_util CMake structure to allow disabling warnings on just one directory.

Last readmes

* Revert "Ignore Y oscillation on robots not capable of Y velocity."

This reverts commit e308a8a5.

* Remove non-configurable threshold from rotate to goal critic.

* Add configurable threshold where odom data comes in.

* Workaround for extreme velocity noise in TB3 simulation

* Adding new parameters to nav2_params file to increase their visibility

* Default to a release build if unspecified.

* Fixing whitespace error

* fixed CI failure for nav2_experimental_rl

* adding colcon ignore

This reverts commit 396048cf.

* added random crawl task to nav2 with reinforcement learning

* factored out dqn class and parameters

* modified readme files

* removed extra file

* added tol to laser append)

* addressing reviewer comments

* fixed spacing format

* added setup cfg file and updated readme

* throttling down while ture loop

* fixed shutdown issue to exit cleanly

* renamed package name and fixed get pkg directory

* fixed few typos

* added goal reached condition for replanning

* changed parallel xml description

* fixed replan tree and update path node status

* fixed linters and addressed comments

This reverts commit b73d659d.

* Add template classes for ROS2 action clients and servers
* Add .action files
* Add a ComputePathToPose action (missed on the first checkin)
* Remove the simple_action_client template (not useful after all) and update action test
* Address some review feedback
* Serialize access to the updated goal handle
* Use preempt terminology in simple_action_server template

* Adding a service to clear a costmap around the robot

* Addressed code review feedback.

* Adding a missing dependency line in the nav2_util CMakeLists.txt

This doesn't seem to affect GCC on Linux, but does cause a problem
for Clang on OS X.

* Motion model also depends on PF.

* Fix launch test service import.

* Additional tests that need fixing that I can't run due to params interface change.

Co-Authored-By: bpwilcox <bpwilcox@eng.ucsd.edu>

Co-Authored-By: bpwilcox <bpwilcox@eng.ucsd.edu>

fix extra line space

Add build badge for Docker Hub

To make build issues from Dockerhub repo used for CI more visible.

* Add progress checker

* Fixing linter errors.

* Making method naming convention consistent.