Copilot++ improvements: Includes green highlights to see what Copilot++ has added, the ability to accept multiple Copilot++ suggestions immediately one after another, support for Copilot++ on SSH, and fixes to how Copilot++ UI interacts with autocomplete plugins.

Bug fixes: Fixed a bug where Cmd-k could get into a bad state when removing at the top of a file. And another that was causing some files to not be indexed.