Clienteling: Release v2.0.20

Improvements:

• Allow setting custom 'aggregations' up from reports in Metabase, and displaying them in search / filter results
• Updated to allow setting a limit on reward redemptions based on spend, both via a 'bracket' system of min and max or a multiplier based on spend (or both)

Bugfix:

• Fix issue where items were being duplicated in Product History, when invoked from the ProfilePurchasedProducts block