Merge pull request databendlabs#842 from b41sh/fix-proj-column-name

[common] refactor column_name for special cases

Merge pull request databendlabs#704 from zhang2014/mysql_graceful_shu…

…tdown

ISSUES-204 graceful shutdown for mysql handler

Merge pull request databendlabs#831 from dantengsky/refactoring-trait…

…-name

Refactoring trait name

Merge pull request databendlabs#823 from BohuTANG/dev-http-profile

[common] profiling

Merge pull request databendlabs#828 from zhang2014/extract_settings

ISSUES-827 extract getter and setter of settings from context to setting

Merge pull request databendlabs#824 from datafuselabs/dependabot/carg…

…o/master/env_logger-0.8.4

Bump env_logger from 0.8.3 to 0.8.4

Merge pull request databendlabs#820 from BohuTANG/dev-aggregate-tests

[common/aggregate] refine the tests

Merge pull request databendlabs#812 from BohuTANG/doc-roadmap

[docs] add roadmap

Merge pull request databendlabs#801 from BohuTANG/dev-fix-tracing

[tracing] fix tracing log level

[aggregate-functions] fix wrong test