I worked on fixing a backwards compatibility break (yargs/yargs-#797), looked into an edge case where sub-commands for yargs didn't correctly validate their positional arguments on strict mode (yargs/yargs-#795), and checked and approved a bunch of fixes working towards the big 7.x release. (yargs/yargs-#786, yargs/yargs-#787, yargs/yargs-#779)
The pull requests have been merged into the 7.x branch in preparation for release.
Our other team members worked on fixing a few other bugs and also building a slack bot to test correct functionality.
Our mentor Ben Coe worked closely with us and I couldn't have done it without all his help and guidance.