What's Changed
* chore: update license copyright by waynexia in https://github.com/GreptimeTeam/promql-parser/pull/1
* feat: define token in yacc file by waynexia in https://github.com/GreptimeTeam/promql-parser/pull/2
* chore: sync develop to main by yuanbohan in https://github.com/GreptimeTeam/promql-parser/pull/50
* docs: update version and readme by yuanbohan in https://github.com/GreptimeTeam/promql-parser/pull/52
**Full Changelog**: https://github.com/GreptimeTeam/promql-parser/commits/v0.1.0