1.51:
-----
 * Remove an outdated backend selector usage

1.50:
-----

 * Prepare for Serendipity Styx 4.4.0 - expandable hooked sidebar links

1.40:
----

 * Fixup some variable checks
 * Raise PHP requirement

1.39:
----

 * Fixup some S9y Series 1 leftover variable conditioning for 1.30

1.38:
----

 * Fix minor quoting

1.37:
----

 * Fix sidebarhider js to wrong index to support serendipityLeftSideBar items too closed on startup
 * Fix sidebarhider js to reset the serendipitySideBarTitle to float:unset
   for the possible theme floats, while title and +/- link are floated to their side as intended.

1.36:
----

 * Fix sidebarhider js

1.35:
----

 * Fix lang constants

1.34:
----

 * Fix another uninitialized variable check

1.33:
----

 * Fix some more uninitialized variable checks

1.32:
----

 * Fix an uninitialized variable

1.31:
----

 * Removed a requirement note
 * Added some margin and padding to backend sidebar list items
 * Removed the to_integrate.zip with the
   serendipity_event_sidebaritemcollapse plugin

1.30:
----

 * Make this work with Serendipity 2.0+
 * Fix Smarty error
 * Untested with the included to_integrate.zip

1.27:
----

 * Use Smarty 3.1 API when possible

1.26:
----

 * Set Plugin consistencies
 * Use lang API - extends required version
 * Append CSS, not prepend

1.25: Move to the correct nav section for 2.0 backend (yellowled)

1.24: Properly parse "sidebars" template option

1.22: Made sure that checkboxes were properly checked.