Qdrant 1.19 - TurboQuant Datatype & Memory Tiers - Qdrant

Introduced the TurboQuant datatype for 4-bit vector compression, reducing storage by up to nine times. Unified memory tier configuration with `pinned`, `cached`, and `cold` tiers. Enabled Per-Tenant IDF Statistics for improved BM25 scoring in multi-tenant environments. Added prefix matching to keyword fields and a slice filter condition for deterministic point partitioning. Enhanced the Web UI with live resharding progress, a scalable Collection Visualizer, and payload index management.