Improved support for thinking/reasoning models: Added `--thinking-tokens` CLI option to control token budget for models that support thinking. Display thinking/reasoning content from LLMs which return it. Enhanced handling of reasoning tags to better clean up model responses. Added deprecation warning for `remove_reasoning` setting, now replaced by `reasoning_tag`. Aider will notify you when it's completed the last request and needs your input: Added notifications when LLM responses are ready with `--notifications` flag. Specify desktop notification command with `--notifications-command`. Added/improved support for many models/providers: Added support for QWQ 32B.

Support for DeepSeek V3 free on OpenRouter: `--model openrouter/deepseek/deepseek-chat:free`. Added support for Claude 3.7 Sonnet models on OpenRouter, Bedrock and Vertex AI. Updated default model to Claude 3.7 Sonnet on OpenRouter. Added support for GPT-4.5-preview model. Added support for Claude 3.7 Sonnet:beta on OpenRouter. Added support for `openrouter/anthropic/claude-3.7-sonnet` Fixed weak_model_name patterns to match main model name patterns for some models. Switch to `tree-sitter-language-pack` for tree sitter…