Updating README to match the actual v1.0.3 changelog.

Changes Made

Added the following to the README right before the features list:

🚀 Latest Updates (v1.0.3)

• Discord Personalization: Added per-guild/per-channel tone, verbosity, emoji usage, signatures, and embed theming.
• GitHub Skill Defaults: Automatic repo, base branch, PR templates, reviewers, labels, and push notifications.
• Skill Dependencies & UI: Visibility of required dependencies and missing-deps alerts in the UI.
• Improved Reflection: Skipping LLM reflection calls when no journal exists to prevent setup-time errors.
• Themed Discord Embeds: Upgraded tool outputs visually.