Changelog (v6.0.7...v6.1.0-BETA1)
- feature #45795 Add support for null-safe operator (mytuny)
- feature #45912 Add some more operators (fabpot)
- feature #45377 Bump minimum version of PHP to 8.1 (nicolas-grekas)
- feature #44073 Support lexing numbers with underscores and decimals with no leading zero (fancyweb)