Manticore Search 15.1.0 Released

Manticore Search 15.1.0 is a maintenance release featuring bug fixes and minor improvements. The update includes MCL 9.0.0 with enhanced columnar storage (uncompressed float-vector storage, modified KNN vector block sizes, and non-buffered reads), though this changes the data format making it unreadable by older MCL versions. Key improvements include better disk chunk flushing logs, support for arbitrary filter expressions in JOIN ON clauses, enhanced LOCK TABLES handling, and Manticore Buddy 3.40.2 with fuzzy-search support. The release fixes numerous issues including Windows service startup problems, KNN vector search crashes, JSON attribute faceting bugs, and various HTTP endpoint issues. The update maintains backward compatibility with existing data and queries.