User Merge API: Merge duplicate users into one

Happy to announce user merge API to merge duplicate user identities into a single distinct_id. This is helpful to consolidate user profiles, especially when users interact across different products or transition from anonymous to identified states.

Key usecases

• Cross-Product Identity Consolidation: When users interact across multiple products (e.g., different apps or services within your platform), they may have different identifiers for each product which needs to be merged later.
• Anonymous to Identified Transition: Platforms often track user actions anonymously before sign-up or login. During this period, user actions are typically tracked under an anonymous ID.
  Upon sign-up, merge the anonymous profile into the newly created identifier to preserve historical data and
  Associate it with the identified user profile.