Updated changelog

changelog.markdown

@@ -41,3 +41,24 b' images to a post'
 * Changed markdown to bbcode
 * Removed linked tags
 * [ADMIN] Added title to the post logs to make them more informative
+
+# 2.2
+* Support websockets for thread update
+* Using div as line separator
+* CSS and JS compressor
+
+# 2.2.1
+* Changed logs style
+* Text preparsing. Support markdown-style text that parses into bbcode
+* "bumpable" field for threads. If the thread became non-bumpable, it will
+remain in this state even if the bumplimit changes or posts will be deleted from
+it
+
+# 2.2.4
+* Default settings. There is a global neboard default settings file, but user
+can override settings in the old settings.py
+* Required tags. Some tags can be marked as required and you can't create thread
+without at least one of them, while you can add any tags you want to it
+* [ADMIN] Cosmetic changes in the admin site. Adding and removing tags is much
+more simple now
+* Don't save tag's threads as a separate table, use aggregation instead
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