v0.4.38-nightly

What's Changed

Dependency Updates

• Bump tracing-subscriber from 0.2.18 to 0.2.19 (#939) by @dependabot[bot]
• Bump pin-project-lite from 0.2.6 to 0.2.7 (#940) by @dependabot[bot]

Features

• [WIP] Support exists (#764) by @jyizheng

Improvement

• [store] refactor terms (#932) by @drmingdrmer
• ISSUE-945: add tracing to file for store (#946) by @bohutang
• ISSUE-942: fix clippy warnings (#943) by @bohutang