Release v0.3.0-nightly-20230522

What's Changed

• feat: implement OpenTableHandler by @WenyXu in #1567
• refactor: remove version column by @v0y4g3r in #1576
• test: move instances tests to "tests-integration" by @MichaelScofield in #1573
• feat: metrics for storage engine by @sunng87 in #1574
• feat: Add FlushPicker to flush regions periodically by @evenyag in #1559
• feat: support frontend-meta heartbeat by @Fengys123 in #1555
• fix: uses nextest in the Release CI by @waynexia in #1582
• feat(tql): add initial implementation for explain & analyze by @etolbakov in #1427
• feat: make RepeatedTask invoke remove_outdated_meta method by @NiwakaDev in #1578
• feat: support user config manifest compression by @Taylor-lagrange in #1579
• chore: add fmt for statement query by @paomian in #1588
• fix: remove region number validation by @WenyXu in #1593
• feat: memtable stats by @v0y4g3r in #1591
• chore: add a uniform prefix to the metrics using the official recommendation of by @paomian in #1590
• feat: implement /api/v1/labels for prometheus by @haohuaijin in #1580
• refactor: support parsing env list by @zyy17 in #1595
• fix: sequence out of range by @fengjiachun in #1597
• feat: add WindowedReader by @v0y4g3r in #1532
• feat: change default selector in meta from "LeaseBased" to "LoadBased" by @Fengys123 in #1598
• fix: fix datanode cannot start while failing to open tables by @WenyXu in #1601
• fix: meta admin API get catalog table name error by @paomian in #1603
• feat: add delete WAL in drop_region by @DevilExileSu in #1577
• fix: wal replay ignore manifest entries by @v0y4g3r in #1612
• refactor(frontend): adjust code structure by @waynexia in #1615

Full Changelog: v0.3.0-nightly-20230515...v0.3.0-nightly-20230522