Improve formatting.

CHANGES.txt

+Changes
+=======
+
 0.15 (unreleased)
-=================
+-----------------
 
  * No changes yet.
 
 0.14 (2011-07-13)
-=================
+-----------------
 
  * Provide new way to instantiate kvm.
 
 0.13 (2011-07-13)
-=================
+-----------------
 
  * Implement generic execute_wait wrapper, which allows to wait for some files
    to appear before starting service depending on it. [Łukasz Nowak]
 
 0.12 (2011-07-11)
-=================
+-----------------
 
  * Fix slaprunner, phpmyadmin software releases, added
    wordpress software release. [Cedric de Saint Martin]
 
 0.11 (2011-07-07)
-=================
+-----------------
 
  * Enable test suite runner for vifib.
 
 0.10 (2011-07-01)
-=================
+-----------------
 
  * Add PHPMyAdmin software release used in SlapOS tutorials
    [Cedric de Saint Martin]
  * Add slaprunner software release [Cedric de Saint Martin]
 
 0.9 (2011-06-24)
-================
+----------------
 
  * mysql recipe : Changing slapos.recipe.erp5.execute to
    slapos.recipe.librecipe.execute [Cedric de Saint Martin]
 
 0.8 (2011-06-15)
-================
+----------------
 
  * Add MySQL and MariaDB standalone software release and recipe
    [Cedric de Saint Martin]
  * Fixed slapos.recipe.erp5testnode instantiation [Sebastien Robin]
 
 0.7 (2011-06-14)
-================
+----------------
 
  * Fix slapos.recipe.erp5 package by providing site.zcml in it. [Łukasz Nowak]
  * Improve slapos.recipe.erp5testnode partition instantiation error reporting
    [Sebastien Robin]
 
 0.6 (2011-06-13)
-================
+----------------
 
  * Fixed slapos.recipe.erp5 instantiation. [Łukasz Nowak]
 
 0.5 (2011-06-13)
-================
+----------------
 
  * Implement zabbix agent instantiation. [Łukasz Nowak]
  * Drop dependency on Zope2. [Łukasz Nowak]
  * Share more in slapos.recipe.librecipe module. [Łukasz Nowak]
 
 0.4 (2011-06-09)
-================
+----------------
 
  * Remove reference to slapos.tool.networkcache as it was removed from pypi. [Łukasz Nowak]
  * Add Kumofs standalone software release and recipe [Cedric de Saint Martin]
  * Add Memcached standalone software release and recipe [Cedric de Saint Martin]
 
 0.3 (2011-06-09)
-================
+----------------
 
  * Moved out template and build to separate distributions [Łukasz Nowak]
  * Depend on slapos.core instead of depracated slapos.slap [Romain Courteaud]
@@ -80,11 +83,11 @@
  * Allow to control full environment in erp5 module [Łukasz Nowak]
 
 0.2 (2011-05-30)
-================
+----------------
 
   * Allow to pass zope_environment in erp5 entry point [Łukasz Nowak]
 
 0.1 (2011-05-27)
-================
+----------------
 
   * All slapos.recipe.* became slapos.cookbook:* [Łukasz Nowak]