Aider v0.81.2 release notes

What the release notes say

Add support for xai/grok-3-beta, xai/grok-3-mini-beta, openrouter/x-ai/grok-3-beta, openrouter/x-ai/grok-3-mini-beta, and openrouter/openrouter/optimus-alpha models.
Add alias "grok3" for xai/grok-3-beta.
Add alias "optimus" for openrouter/openrouter/optimus-alpha.
Fix URL extraction from error messages.
Allow adding files by full path even if a file with the same basename is already in the chat.
Fix quoting of values containing '#' in the sample aider.conf.yml.
Add support for Fireworks AI model 'deepseek-v3-0324', by Felix Lisczyk.
Commit messages generated by aider are now lowercase, by Anton Ödman.