v0.21.0

What's Changed

• fix: fix engines to "^12.22.0 || ^14.17.0 || >=16.0.0" by @yeonjuan in #150
• fix: correct not-restricted-attr-values docs title by @MorevM in #151
• chore: fix typo by @yeonjuan in #152
• feat: skip check when html tag does not exists by @yeonjuan in #154
• refactor: change ts to js by @yeonjuan in #155
• refactor: refactor rules by @yeonjuan in #156
• feat: add lowercase by @yeonjuan in #158
• feat: add require-open-graph-protocol by @yeonjuan in #159
• fix: make skip options handle nested tags (fixes #160) by @yeonjuan in #161
• feat: add sort-attrs (fixes #92) by @yeonjuan in #162
• feat: renewal website by @yeonjuan in #163
• docs: improve rule docs by @yeonjuan in #164

Full Changelog: v0.20.0...v0.21.0