Release Version 2

✨ Block Builder Version 2 is now here!

• Better TypeScript experience.
• Configuration methods now accept arguments.
• New BlockCollection and AttachmentCollection features.
• New Md object with Slack markdown helpers.
• All objects now importable through their 'categories' as well as top-level.
• Improved JSDoc annotations.

To read more about this release and possible breaking changes, see the announcement.