Added

• support eslint v7 (#2635 @ljharb, @toshi-toma)
• forbid-component-props/forbid-dom-props: Allow a custom message with forbid props (#2615 @mtamhankar1)
• jsx-no-literals: add ignoreProps option to ignore props validation (#2146 @iiison)

Fixed

• jsx-sort-props: only use localeCompare when case is ignored (#2556 @tanmoyopenroot)
• jsx-key: add a failing test case for optional chaining (#2610 @JonathanLee-LX)
• no-unused-state: handle optional chaining (#2588 @golopot)
• jsx-pascal-case: Do not consider namespaces when checking for DOM (#2638 @yacinehmito)
• jsx-curly-spacing, jsx-no-bind, usedPropTypes util: avoid node.start and node.end (25b1936 @toshi-toma)
• jsx-no-target-blank: allow no-referrer without noopener by default (#2043 @seancrater)
• button-has-type: improve message when non-static value is used (aecff62 @golopot)
• no-adjacent-inline-elements: prevent crash on nullish children (#2621 @Rogdham)
• prop-types: avoid crash when spreading any type (#2606 @golopot))
• require-render-return: add missing "a" (#2604 @leothorp)
• jsx-no-comment-textnodes: fix for @typescript-eslint/parser (#2601 @Axnyff)
• [displayName][]: avoid a crash when using React.memo (#2587 @golopot)

Docs

• Clean up examples in rule docs (#2546 @silvenon)
• [readme] Add Rules of Hooks to Other useful plugins section (#2633 @petetnt)
• no-this-in-sfc: backtick this (#2616 @mrflip)
• function-component-definition: Fix unnamedComponents option examples (#2608 @vkrol))

Changed

• [Deps] Move "semver" to devDependencies (#2595 @rajivshah3)
• [eslint] remove operator-linebreak override (#2578 @golopot)
• [Tests] button-has-type: ensure no mistakenly allowed identifiers named button/submit/reset (#2625 @golopot)
• [Tests] displayName: add a test case (#2593 @golopot)
• [Dev Deps] update @types/eslint, @types/estree, @types/node, @typescript-eslint/parser, coveralls, eslint-config-airbnb-base, eslint-plugin-import, typescript