update for postcss 8 (postcss/postcss-color-rebeccapurple#16)

* deps: update dependencies

* fix name

* fix urls

* update to postcss 8 api

* deps: update css-values-parser to v5

Co-authored-by: Jonathan Neal <jonathantneal@hotmail.com>

plugins/postcss-color-rebeccapurple/.rollup.js

@@ -1,9 +1,24 @@
-import pkg from './package.json'
+import babel from '@rollup/plugin-babel'
 
 export default {
-	...pkg.rollup,
-	plugins: pkg.rollup.plugins.map(plugin => require(plugin)()),
-	onwarn(warning, warn) {
-		if (warning.code !== 'UNRESOLVED_IMPORT') warn(warning)
-	}
+	input: 'src/index.js',
+	plugins: [
+		babel({
+			babelHelpers: 'bundled',
+			presets: [
+				['@babel/env', {
+					modules: false,
+					targets: { node: 10 }
+				}]
+			]
+		})
+	],
+	external: [
+		'postcss',
+		'postcss-values-parser'
+	],
+	output: [
+		{ file: 'dist/index.cjs.js', format: 'cjs', sourcemap: true, exports: 'default' },
+		{ file: 'dist/index.esm.js', format: 'esm', sourcemap: true, exports: 'default' }
+	]
 }

plugins/postcss-color-rebeccapurple/CONTRIBUTING.md

@@ -26,7 +26,7 @@ scope and avoid unrelated commits.
    cd postcss-color-rebeccapurple
 
    # Assign the original repo to a remote called "upstream"
-   git remote add upstream git@github.com:csstools/postcss-color-rebeccapurple.git
+   git remote add upstream git@github.com:postcss/postcss-color-rebeccapurple.git
 
    # Install the tools necessary for testing
    npm install

plugins/postcss-color-rebeccapurple/README.md

@@ -1,8 +1,8 @@
 # PostCSS RebeccaPurple [<img src="https://postcss.github.io/postcss/logo.svg" alt="PostCSS" width="90" height="90" align="right">][postcss]
 
-[<img alt="npm version" src="https://img.shields.io/npm/v/postcss-lab-function.svg" height="20">][npm-url]
+[<img alt="npm version" src="https://img.shields.io/npm/v/postcss-color-rebeccapurple.svg" height="20">][npm-url]
 [<img alt="CSS Standard Status" src="https://cssdb.org/badge/rebeccapurple-color.svg" height="20">][css-url]
-[<img alt="Build Status" src="https://img.shields.io/travis/csstools/postcss-lab-function/master.svg" height="20">][cli-url]
+[<img alt="Build Status" src="https://img.shields.io/travis/postcss/postcss-color-rebeccapurple/master.svg" height="20">][cli-url]
 [<img alt="Support Chat" src="https://img.shields.io/badge/support-chat-blue.svg" height="20">][git-url]
 
 [PostCSS RebeccaPurple] lets you use the `rebeccapurple` color keyword in CSS.