v0.24.0-beta1

Added

• Varchar type.
• FIRST and LAST aggregations.
• Count distinct aggregation.

Changed

• Errors now report the repository causing the error, if possible.
• Switch some types of known or maximum length (mostly hashes and emails)
  to VarChar with a size.
• Traces now have a root span.
• New API for node transformations.

Fixed

• Fixed the behaviour of limit and offset.
• Resolution of HAVING nodes.