diff --git a/CHANGELOG.md b/CHANGELOG.md
new file mode 100644
index 000000000..eb712c80b
--- /dev/null
+++ b/CHANGELOG.md
@@ -0,0 +1,34 @@
+# [6.3.0](https://github.com/dcodeIO/protobuf.js/releases/tag/6.3.0)
+
+## Breaking
+[:hash:](https://github.com/dcodeIO/protobuf.js/commit/22a64c641d4897965035cc80e92667bd243f182f) Removed dead parts of the Reader API<br />
+[:hash:](https://github.com/dcodeIO/protobuf.js/commit/964f65a9dd94ae0a18b8be3d9a9c1b0b1fdf6424) Refactored BufferReader/Writer to their own files and removed unnecessary operations (node always has FloatXXArray and browser buffer uses ieee anyway)<br />
+[:hash:](https://github.com/dcodeIO/protobuf.js/commit/bfac0ea9afa3dbaf5caf79ddf0600c3c7772a538) Stripped out fallback encoder/decoder/verifier completely (even IE8 supports codegen), significantly reduces bundle size, can use static codegen elsewhere<br />
+
+## Fixed
+[:hash:](https://github.com/dcodeIO/protobuf.js/commit/7fac9d6a39bf42d316c1676082a2d0804bc55934) Properly check Buffer.prototype.set with node v4<br />
+[:hash:](https://github.com/dcodeIO/protobuf.js/commit/3ad8108eab57e2b061ee6f1fddf964abe3f4cbc7) Prevent NRE and properly annotate verify signature in tsd-jsdoc, fixed [#572](https://github.com/dcodeIO/protobuf.js/issues/572)<br />
+[:hash:](https://github.com/dcodeIO/protobuf.js/commit/6c2415d599847cbdadc17dee3cdf369fc9facade) Fix directly using Buffer instead of util.Buffer<br />
+[:hash:](https://github.com/dcodeIO/protobuf.js/commit/ea7ba8b83890084d61012cb5386dc11dadfb3908) Fixed release links in README files [ci skip]<br />
+
+## New
+[:hash:](https://github.com/dcodeIO/protobuf.js/commit/ef43acff547c0cd84cfb7a892fe94504a586e491) Added Namespace#getEnum and changed #lookupEnum to the same behavior, see [#576](https://github.com/dcodeIO/protobuf.js/issues/576)<br />
+[:hash:](https://github.com/dcodeIO/protobuf.js/commit/1fcfdfe21c1b321d975a8a96d133a452c9a9c0d8) Added a heap of coverage comments for usually unused code paths to open things up<br />
+[:hash:](https://github.com/dcodeIO/protobuf.js/commit/c234de7f0573ee30ed1ecb15aa82b74c0f994876) Added codegen test to determine if any ancient browsers don't actually support it<br />
+[:hash:](https://github.com/dcodeIO/protobuf.js/commit/fed2000e7e461efdb1c3a1a1aeefa8b255a7c20b) Added legacy groups support to pbjs, see [#568](https://github.com/dcodeIO/protobuf.js/issues/568)<br />
+[:hash:](https://github.com/dcodeIO/protobuf.js/commit/974a1321da3614832aa0a5b2e7c923f66e4ba8ae) Initial support for legacy groups + test case, see [#568](https://github.com/dcodeIO/protobuf.js/issues/568)<br />
+
+## CLI
+[:hash:](https://github.com/dcodeIO/protobuf.js/commit/3e7e4fc59e6d2d6c862410b4b427fbedccdb237b) Removed type/ns alias comment in static target to not confuse jsdoc unnecessarily<br />
+[:hash:](https://github.com/dcodeIO/protobuf.js/commit/99ad9cc08721b834a197d4bbb67fa152d7ad79aa) Made pbjs use loadSync for deterministic outputs, see [#573](https://github.com/dcodeIO/protobuf.js/issues/573)<br />
+
+## Docs
+[:hash:](https://github.com/dcodeIO/protobuf.js/commit/7939a4bd8baca5f7e07530fc93f27911a6d91c6f) Updated README and bundler according to dynamic require calls<br />
+
+## Other
+[:hash:](https://github.com/dcodeIO/protobuf.js/commit/ab3e236a967a032a98267a648f84d129fdb4d4a6) Enums can't be map key types<br />
+[:hash:](https://github.com/dcodeIO/protobuf.js/commit/8ef6975b0bd372b79e9b638f43940424824e7176) Use custom require (now a micromodule) for all optional modules, see [#571](https://github.com/dcodeIO/protobuf.js/issues/571)<br />
+[:hash:](https://github.com/dcodeIO/protobuf.js/commit/19e906c2a15acc6178b3bba6b19c2f021e681176) Reverted aliases frequently used in codegen for better gzip ratio<br />
+[:hash:](https://github.com/dcodeIO/protobuf.js/commit/47b51ec95a540681cbed0bac1b2f02fc4cf0b73d) Shrinked bundle size - a bit<br />
+[:hash:](https://github.com/dcodeIO/protobuf.js/commit/f8451f0058fdf7a1fac15ffc529e4e899c6b343c) Can finally run with --trace-deopt again without crashes<br />
+[:hash:](https://github.com/dcodeIO/protobuf.js/commit/9c9a66bf393d9d6927f35a9c18abf5d1c31db912) Other minor optimizations<br />
diff --git a/scripts/changelog.js b/scripts/changelog.js
new file mode 100644
index 000000000..5d6a8d492
--- /dev/null
+++ b/scripts/changelog.js
@@ -0,0 +1,97 @@
+var gitSemverTags = require("git-semver-tags"),
+    gitRawCommits = require("git-raw-commits");
+
+var pkg = require("../package.json");
+
+var breakingFallback = /removed|stripped|dropped/i;
+
+// categories to be used in the future and regexes for lazy / older subjects
+var validCategories = {
+    "Breaking": null,
+    "Fixed": /fix|properly|prevent/i,
+    "New": /added|initial/i,
+    "CLI": /pbjs|pbts/,
+    "Docs": /README/i,
+    "Other": null
+};
+
+var repo = "https://github.com/dcodeIO/protobuf.js";
+
+gitSemverTags(function(err, tags) {
+    if (err)
+        throw err;
+
+    var categories = {};
+    Object.keys(validCategories).forEach(function(category) {
+        categories[category] = [];
+    });
+
+    var commits = gitRawCommits({
+        from: tags[0],
+        to: 'HEAD',
+        merges: false,
+        format: "%B%n#%H"
+    });
+
+    commits.on("error", function(err) {
+        throw err;
+    });
+
+    commits.on("data", function(chunk) {
+        chunk.toString("utf8").trim().split(";").forEach(function(message) {
+            if (/^(Merge pull request |Post\-merge)/.test(message))
+                return;
+            var match = /#([0-9a-f]{40})$/.exec(message);
+            var hash;
+            if (match) {
+                message = message.substring(0, message.length - match[1].length).trim();
+                hash = match[1];
+            }
+            match = /^(\w+):/i.exec(message = message.trim());
+            var category;
+            if (match && match[1] in validCategories) {
+                category = match[1];
+                message = message.substring(match[1].length + 1).trim();
+            } else {
+                var keys = Object.keys(validCategories);
+                for (var i = 0; i < keys.length; ++i) {
+                    var re = validCategories[keys[i]];
+                    if (re && re.test(message)) {
+                        category = keys[i];
+                        break;
+                    }
+                }
+                message = message.replace(/^(\w+):/i, "").trim();
+            }
+            if (!category) {
+                if (breakingFallback.test(message))
+                    category = "Breaking";
+                else
+                    category = "Other";
+            }
+            var nl = message.indexOf("\n");
+            if (nl > -1)
+                message = message.substring(0, nl).trim();
+            if (!hash || message.length < 12)
+                return;
+            categories[category].push({
+                text: message,
+                hash: hash
+            });
+        });
+    });
+
+    commits.on("end", function() {
+        console.log("# [" + pkg.version + "](" + repo + "/releases/tag/" + pkg.version + ")");
+        Object.keys(categories).forEach(function(category) {
+            var messages = categories[category];
+            if (!messages.length)
+                return;
+            console.log("\n## " + category);
+            messages.forEach(function(message) {
+                var text = message.text.replace(/#(\d+)/g, "[#$1](" + repo + "/issues/$1)");
+                console.log("[:hash:](" + repo + "/commit/" + message.hash + ") " + text + "<br />");
+            });
+        });
+    });
+});
diff --git a/scripts/release.js b/scripts/release.js
deleted file mode 100644
index 9a9dce61d..000000000
--- a/scripts/release.js
+++ /dev/null
@@ -1,39 +0,0 @@
-var child_process = require("child_process"),
-    gitSemverTags = require("git-semver-tags"),
-    gitRawCommits = require("git-raw-commits");
-var pkg = require("../package.json");
-
-var categories = {};
-var validCategories = [
-    "Breaking",
-    "Added",
-    "Fixed",
-    "Docs"
-];
-
-gitSemverTags(function(err, tags) {
-    if (err)
-        throw err;
-    var commits = gitRawCommits({ from: tags[0], to: 'HEAD' });
-    commits.on("error", function(err) {
-        throw err;
-    });
-    commits.on("data", function(chunk) {
-        chunk.toString("utf8").trim().split(";").forEach(function(message) {
-            var match = /(\w+): (.*)/.exec(message = message.trim());
-            var category;
-            if (match && validCategories.indexOf(match[1]) > -1) {
-                category = match[1];
-                message = match[2].trim();
-            } else
-                category = "Other";
-            (categories[category] || (categories[category] = [])).push(message);
-        });
-    });
-    commits.on("end", function() {
-        console.log(categories);
-    });
-});
-
-// child_process.execSync("git tag " + pkg.version);
-// child_process.execSync("git push -u origin master --tags");