Added full support for the Bot API 9.6 (#1792)

* Added full support for the Bot API 9.6

* Add support for `managed_bot` updates

* Set `description_parse_mode` default to `"parse_mode"` and use `DateTime` for `addition_date` in `PollOption`

* Update changelog with features and changes from Bot API 9.6

* Add changelog fragment generator and update poll parameter descriptions

.serena/memories/suggested_commands.md

@@ -0,0 +1,66 @@
+# Suggested Commands
+
+## Setup
+```bash
+uv sync --all-extras --group dev --group test
+uv run pre-commit install
+```
+
+## Lint & Format (quick loop — use before every commit)
+```bash
+uv run ruff check --show-fixes --preview aiogram examples
+uv run ruff format --check --diff aiogram tests scripts examples
+uv run mypy aiogram
+```
+
+## Auto-fix formatting
+```bash
+uv run ruff format aiogram tests scripts examples
+uv run ruff check --fix aiogram tests scripts examples
+```
+
+## Run tests
+```bash
+uv run pytest tests                                                   # basic
+uv run pytest tests --redis redis://localhost:6379/0                  # with Redis
+uv run pytest tests --mongo mongodb://mongo:mongo@localhost:27017     # with MongoDB
+```
+
+## Build docs
+```bash
+# Live-reload dev server
+uv run --extra docs sphinx-autobuild --watch aiogram/ --watch CHANGES.rst --watch README.rst docs/ docs/_build/
+# One-shot build
+uv run --extra docs bash -c 'cd docs && make html'
+```
+
+## Code generation (Bot API codegen)
+```bash
+# After editing .butcher/*.yml or templates:
+uv run --extra cli butcher parse
+uv run --extra cli butcher refresh
+uv run --extra cli butcher apply all
+```
+
+## API version bump (maintainers only)
+```bash
+make update-api args=patch   # runs butcher parse/refresh/apply + version bump
+```
+
+## Changelog
+```bash
+# Preview draft
+uv run --extra docs towncrier build --draft
+# Build final
+uv run --extra docs towncrier build --yes
+```
+
+## Clean build artifacts
+```bash
+make clean
+```
+
+## Build package
+```bash
+uv build
+```