Aider v0.54.0

• Added model settings for gemini/gemini-1.5-pro-exp-0827 and
  gemini/gemini-1.5-flash-exp-0827.
• Shell and /run commands can now be interactive in environments where a pty is available.
• Optionally share output of suggested shell commands back to the LLM.
• New --[no-]suggest-shell-commands switch to configure shell commands.
• Performance improvements for autocomplete in large/mono repos.
• New --upgrade switch to install latest version of aider from pypi.
• Bugfix to --show-prompt.
• Disabled automatic reply to the LLM on /undo for all models.
• Removed pager from /web output.
• Aider wrote 64% of the code in this release.