Setting the maximum number of recent questions in the chat history.

[ErykCh]

Issue

I would like to be able to set how many last questions should be remembered in the chat history. When working longer, I don't want the last 50 questions to be in the chat history. I think that the last 7 questions are a reasonable maximum.

Version and model info

Aider v0.43.5-dev Models: openrouter/anthropic/claude-3.5-sonnet with diff edit format, weak model openrouter/anthropic/claude-3-haiku Git repo: .git with 96 files Repo-map: using 2028 tokens Added .aider.memory.md to the chat.