Review/respond to LFD121 feedback

[david-a-wheeler]

Review the LFD121 survey responses as of 2022-08 to look for ways to improve the course. The survey responses are here:

LFD121 survey responses-2022-08.pdf

There is a lot of interesting feedback, and as we identify specific things we'll do, those should be identified as separate issues or pull requests. Unsurprisingly, learners suggested ways to make it better, and that's great. However, I also take heart that of those who provided feedback, 68.97% would definitely recommend and 18.97% would probably recommend, for a total of 87.94% of "probably recommend or better". That's actually pretty good; let's work to make it better.