Compatibility with ESLint 7.x

[groenroos]

The "eslint": ">=6" peer dependency constraint makes npm refuse to install this in my project using ESLint 7;

npm ERR! code ERESOLVE
npm ERR! ERESOLVE could not resolve
npm ERR!
npm ERR! While resolving: undefined@undefined
npm ERR! Found: [email protected]
npm ERR! node_modules/eslint
npm ERR!   peer eslint@">=7.5.0" from @babel/[email protected]
npm ERR!   node_modules/@babel/eslint-parser
npm ERR!     @babel/eslint-parser@"^7.12.16" from [email protected]
npm ERR!     node_modules/eslint-template-visitor
npm ERR!       eslint-template-visitor@"^2.3.2" from [email protected]
npm ERR!       node_modules/eslint-plugin-unicorn
npm ERR!         eslint-plugin-unicorn@"^36.0.0" from [email protected]
npm ERR!         node_modules/xo
npm ERR!     dev @babel/eslint-parser@"^7.15.7" from the root project
npm ERR!   peer eslint@"^5.0.0 || ^6.0.0 || ^7.0.0" from @typescript-eslint/[email protected]
npm ERR!   node_modules/@typescript-eslint/eslint-plugin
npm ERR!     peer @typescript-eslint/eslint-plugin@">=4.32.0" from [email protected]
npm ERR!     node_modules/eslint-config-xo-typescript
npm ERR!       eslint-config-xo-typescript@"^0.45.0" from [email protected]
npm ERR!       node_modules/xo
npm ERR!         dev xo@"^0.45.0" from the root project
npm ERR!     @typescript-eslint/eslint-plugin@"^4.32.0" from [email protected]
npm ERR!     node_modules/xo
npm ERR!       dev xo@"^0.45.0" from the root project
npm ERR!   18 more (@typescript-eslint/experimental-utils, eslint-utils, ...)
npm ERR!
npm ERR! Could not resolve dependency:
npm ERR! dev eslint-config-xo-vue@"*" from the root project
npm ERR!
npm ERR! Conflicting peer dependency: [email protected]
npm ERR! node_modules/eslint
npm ERR!   peer eslint@"^5.0.0 || ^6.0.0" from [email protected]
npm ERR!   node_modules/eslint-plugin-vue
npm ERR!     peer eslint-plugin-vue@"^6.2.1" from [email protected]
npm ERR!     node_modules/eslint-config-xo-vue
npm ERR!       dev eslint-config-xo-vue@"*" from the root project
npm ERR!
npm ERR! Fix the upstream dependency conflict, or retry
npm ERR! this command with --force, or --legacy-peer-deps
npm ERR! to accept an incorrect (and potentially broken) dependency resolution.

Using --legacy-peer-deps results in an error when trying to run XO;

Error: BaseConfig » /node_modules/eslint-config-xo-vue/index.js:
	Configuration for rule "unicorn/prevent-abbreviations" is invalid:
	Value {"whitelist":{"props":true,"assetsDir":true}} should NOT have additional properties.

    at ConfigValidator.validateRuleOptions (/node_modules/@eslint/eslintrc/lib/shared/config-validator.js:144:23)
    at /node_modules/@eslint/eslintrc/lib/shared/config-validator.js:199:18
    at Array.forEach (<anonymous>)
    at ConfigValidator.validateRules (/node_modules/@eslint/eslintrc/lib/shared/config-validator.js:196:34)
    at ConfigValidator.validateConfigArray (/node_modules/@eslint/eslintrc/lib/shared/config-validator.js:322:18)
    at CascadingConfigArrayFactory._finalizeConfigArray (/node_modules/@eslint/eslintrc/lib/cascading-config-array-factory.js:493:23)
    at CascadingConfigArrayFactory.getConfigArrayForFile (/node_modules/@eslint/eslintrc/lib/cascading-config-array-factory.js:299:21)
    at CLIEngine.isPathIgnored (/node_modules/eslint/lib/cli-engine/cli-engine.js:973:18)
    at ESLint.isPathIgnored (/node_modules/eslint/lib/eslint/eslint.js:688:26)
    at runEslint (file://node_modules/xo/index.js:31:31)

Is there a way to make this plugin happy with ESLint 7?