add changelog with v18, v19 details

ChangeLog

@@ -1,13 +1,20 @@
 
-See commit history for detailed changes:
-
-https://github.com/joelthelion/autojump/commits/master/
+# See commit history for detailed changes:
+# https://github.com/joelthelion/autojump/commits/master/
 
 2011-12-11  Joël Schaerer  <joel.schaerer@gmail.com>
 
-	* Add code clean up, Debian post-installation instructions.
+	* Release v19
+	* prototype `cp` and `mv` directory tab completion
+	* Debian post-installation instructions
+	* minor Mac OS X fixes
 
 2011-11-18  Joël Schaerer  <joel.schaerer@gmail.com>
 
-	* Add automated version numbering, add local installation option.
-
+	* Release v18
+	* add automated version numbering
+	* performance tweaks to reduce filesystem checks
+	* add local installation option
+	* unicode fixes
+	* (ugly) fixes for Python 3
+	* migrate to new database format