Merge pull request osrf#656 from osrf/M1chaelM/2.2_changelog

update changelog for v2.2

Merge pull request osrf#627 from osrf/M1chaelM/v210_changelog

Updating changelog for v2.1.0

adding one more PR to Changelog

VRX 2022 final with timeout fix

vrx 2022 competition code base

fix order of PRs

Practice worlds 2022 (osrf#369)

* Added 2022 practice worlds.

Merge pull request osrf#359 from osrf/M1hchaelM/vrx_2022_demo_world

adding 2022 elements to vrx.launch

Merge pull request osrf#270 from osrf/v1_4_changelog

update changelog for v 1.4