Fix extend compaction bug and ensure tests import package#1

SaridakisStamatisChristos merged 1 commit intomainSaridakisStamatisChristos/kll_sketch:mainfrom

codex/find-reason-for-test-failuresSaridakisStamatisChristos/kll_sketch:codex/find-reason-for-test-failuresCopy head branch name to clipboard