Draft episode content for `iterative-development.md`

[tobyhodges]

• [ ] reading list
  • a list of pages/publications trainees should read before joining this group discussion.
• [ ] discussion questions
  • questions to prompt interesting and relevant discussion around the themes of the week's reading.
  • it is totally fine - perhaps better, even - if these are questions that we do not have an answer to, e.g. the discussions could be useful for informing and improving the CLDT curriculum. It will probably make them more interesting too!
• [ ] (optional) homework task(s)
  • anything you think it could be helpful for trainees to work through on their own between group discussions
  • we should certainly not aim to have homework every week, especially where the reading list for next week is already long.