Changes between ROS 1 and ROS 2 design doc is out of date

[ruffsl]

I was going to share the Changes between ROS 1 and ROS 2 design doc to a few colleagues, as it's very condensed overview and conveniently links out to more detailed documentation as needed.

https://github.com/ros2/design/blob/gh-pages/articles/changes.md

However, after re-reading it recently, it seems like there are a number of outdated entries, many of which are marked with ⏳, such as:

• Actions
• roslaunch
• Topic namespaces (?)
• remapping

This would be a low hanging fruit ticket if anyone else has the time to write an informed update.

[ros-discourse]

This issue has been mentioned on ROS Discourse. There might be relevant details there:

https://discourse.ros.org/t/consolidated-ros2-feature-status/15004/5