v1.1.0-a2 dbt_intercom

PR #68 is a pre-release that includes the following updates:

Bug Fixes

• Consolidated CTEs and joins to reduce the compute load of int_intercom__conversation_part_events for customers with large intercom__conversation_part_history source tables.
• Corrected last_close_by_author_id logic that was incorrectly referencing first_close_by_author_id values.

Under the Hood

• Created consistency test for intercom__conversation_enhanced to validate that the above changes do not impact end model values.

Full Changelog: v1.0.0...v1.1.0-a2