N°5621 Move showdown 2.0.0-alpha1 to NPM

Current file header is : /*! showdown v 2.0.0-alpha1 - 25-09-2018 */

Official 2.0.0-alpha doesn't match neither on content nor date :(
Considering date we would be at 1.8.7, but it is also quite different (and has vulnerabilities)
In consequence switching to 2.0.0.

node_modules/wrap-ansi/package.json

@@ -0,0 +1,62 @@
+{
+	"name": "wrap-ansi",
+	"version": "7.0.0",
+	"description": "Wordwrap a string with ANSI escape codes",
+	"license": "MIT",
+	"repository": "chalk/wrap-ansi",
+	"funding": "https://github.com/chalk/wrap-ansi?sponsor=1",
+	"author": {
+		"name": "Sindre Sorhus",
+		"email": "sindresorhus@gmail.com",
+		"url": "https://sindresorhus.com"
+	},
+	"engines": {
+		"node": ">=10"
+	},
+	"scripts": {
+		"test": "xo && nyc ava"
+	},
+	"files": [
+		"index.js"
+	],
+	"keywords": [
+		"wrap",
+		"break",
+		"wordwrap",
+		"wordbreak",
+		"linewrap",
+		"ansi",
+		"styles",
+		"color",
+		"colour",
+		"colors",
+		"terminal",
+		"console",
+		"cli",
+		"string",
+		"tty",
+		"escape",
+		"formatting",
+		"rgb",
+		"256",
+		"shell",
+		"xterm",
+		"log",
+		"logging",
+		"command-line",
+		"text"
+	],
+	"dependencies": {
+		"ansi-styles": "^4.0.0",
+		"string-width": "^4.1.0",
+		"strip-ansi": "^6.0.0"
+	},
+	"devDependencies": {
+		"ava": "^2.1.0",
+		"chalk": "^4.0.0",
+		"coveralls": "^3.0.3",
+		"has-ansi": "^4.0.0",
+		"nyc": "^15.0.1",
+		"xo": "^0.29.1"
+	}
+}