release: update changelog for 1.5.1 release

release: update changelog for 1.5.0 release

release: update changelog for 1.4.0 release

release: update changelog for 1.3.0 release

release: update changelog for 1.2.0 release

feat: add custom maths operator section

feat!: use renamed symbols

See https://github.com/typst/typst/releases/tag/v0.7.0 for details.

BREAKING CHANGE: `.eqq` and `ident` are unavailable.

fix: correct a typo in the link to the doc of `array`

feat: adjust the alignment and gutters of math-code listings

chore: update date