Update CHANGELOG.md

CHANGELOG.md

@@ -1,68 +1,3 @@
-<a name="2.0.0-alpha1"></a>
-# [2.0.0-alpha1](https://github.com/showdownjs/showdown/compare/1.8.5...2.0.0-alpha1) (2018-09-08)
-
-
-### Bug Fixes
-
-* **package:** update yargs to version 11.0.0 ([#491](https://github.com/showdownjs/showdown/issues/491)) ([6376d40](https://github.com/showdownjs/showdown/commit/6376d40))
-* compress showdown emoji ([55f22de](https://github.com/showdownjs/showdown/commit/55f22de))
-* replaces \u00A0 with &nbsp; ([f20dc75](https://github.com/showdownjs/showdown/commit/f20dc75)), closes [#521](https://github.com/showdownjs/showdown/issues/521)
-
-
-### Code Refactoring
-
-* **subParsers:** change name and directory of subparsers ([3db9200](https://github.com/showdownjs/showdown/commit/3db9200))
-
-
-### Features
-
-* **makeMarkdown:** convert HTML to MD ([358947b](https://github.com/showdownjs/showdown/commit/358947b))
-* **splitAdjacentBlockquotes:** add option to split adjacent blockquote blocks ([ea3db5f](https://github.com/showdownjs/showdown/commit/ea3db5f)), closes [#477](https://github.com/showdownjs/showdown/issues/477)
-
-
-### BREAKING CHANGES
-
-* **subParsers:** makeHtml subparsers names changed, by prepending 'makehtml.' to them.
-Example: 'anchors', subparser is now named 'makehtml.anchors'.
-
-Event names were also changed to reflect this.
-Example: 'anchors.before' is now named 'makehtml.anchors.before'.
-
-**To migrate:**
-
-If you have a listener extension, replace the old event name with the new one. Example:
-
-Replace this
-
-```js
-showdown.extension('myext', function() {
-  return [{
-    type: 'listener',
-    listeners: {
-      'anchors.before': function (event, text, converter, options, globals) {
-        //... some code
-        return text;
-      }
-  }];
-});
-```
-
-with this
-```js
-showdown.extension('myext', function() {
-  return [{
-    type: 'listener',
-    listeners: {
-      'makehtml.anchors.before': function (event, text, converter, options, globals) {
-        //... some code
-        return text;
-      }
-  }];
-});
-```
-
-
-
 <a name="1.8.5"></a>
 # [1.8.5](https://github.com/showdownjs/showdown/compare/1.8.4...1.8.5) (2017-12-10)