updated OPQ to reduce dimensions to 4 times of output subvectors

release latest BEIR v1.0.1

update latest version to v1.0.0

add: commit changes to latest v0.2.3

bump version from v0.2.1 to v0.2.2

new PyPI version bump from v0.2.0 to v0.2.1

bump PyPI version to v0.2.0