Changelog:

  * Added support for iterative index scans
  * Added casts for arrays to sparsevec
  * Improved cost estimation for better index selection when filtering
  * Improved performance of HNSW index scans
  * Improved performance of HNSW inserts and on-disk index builds
  * Dropped support for Postgres 12

Taken from:
  https://github.com/pgvector/pgvector/blob/master/CHANGELOG.md