Added JS file

Author: ismailuddin

doc/source/_static/js/whatsnew_links.js

@@ -0,0 +1,32 @@
+(function() {
+	const links = document.getElementsByTagName('a');
+	for (let i = 0; i < links.length; i++) {
+		let linkElements = links[i].href.split("/");		
+		var re = /(whatsnew.html)#(whatsnew)-[A-Za-z\d]+(-\w+)+/g;
+		if (re.test(linkElements.slice(-1)[0])) {
+			let whatsNew = linkElements.slice(-1)[0].split("#");
+			whatsNew = generateWhatsNew(whatsNew);
+			linkElements[linkElements.length - 1] = whatsNew;
+			links[i].href = linkElements.join("/")
+		}
+	}
+	/* Reformats last part of 'whatsnew' URLs */
+	function generateWhatsNew(whatsNew) {
+		let url = whatsNew[0];
+		let anchor = whatsNew[1];
+		url = replaceURL(url);
+		let anchorEls = anchor.slice(9).split("-");
+		anchorEls[0] = reformatVersion(anchorEls[0]);
+		return url + anchorEls[0] + anchorEls.slice(1).join("-");
+	}
+
+    /* Replaces 'whatsnew.html' with 'whatsnew/' */
+	function replaceURL(url) {
+		return url.split(".")[0] + "/"
+	}
+
+    /* Converts version number into vX.X.X */
+	function reformatVersion(version) {
+		return "v" + version.slice(0,1) + "." + version.slice(1,3) + "." + version.slice(3) + ".html#"
+	}
+})();