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