Wikipedia : Wikipedia Toolbar/version history
0.5.9
fixed small version of toggle button
minor code tweaks that should cut down on conflicts with other extensions
bumped version tagging for 3.1b2pre
reduced width of search bar to better accommodate lower screen resolutions
fixed another installation size issue
drastically reduced installation size by optimizing image files (thanks to a suggestion by User:AVRS )
bumped version tagging for Firefox 3.1a1pre
added secure updates via mozdev.org
corrected an error in version tagging
bumped version tagging for Firefox 3 final
fixed history button middle-clicking
added new section button (+)
fixed article/talk toggle button behavior on Template: and MediaWiki: namespace pages
bumped version tagging for Firefox 3 pre-release
fixed hide/unhide toolbar button to display Wikipedia logo, rather than blank
updated for Firefox 3 beta compatibility
fixed enter key bug for search bar; enter key now executes "go" function again
removed URL listeners, which allowed for disabling buttons that can't be used at the current page; it was causing too many bugs; may revisit this feature in the future.
implemented positioning fix that should hopefully place this toolbar below all others (please let me know if this worked)
added "my" and "navigate" menus
added unwatch button
middle-clicks load in new tabs
enabled updating via Firefox update function
fixed no-redirect button bug
talk/article toggle button text live-updates depending on the current page.
disable buttons that aren't usable at the current page.
removed dropdown menu (for now)
added show/hide button available from main Firefox toolbar
added Wikipedia logo icon
added CSS skin structure with minor cosmetic improvements for now
reduced button/edit box text size
added search bar
cosmetic improvments (more still needed)
rewrote functions to use Wikipedia's javascript variables to form URLs instead of the old search/replace method.
added userpage button
tested concept, with just three buttons