May 17th, 2012· Fixed bug affecting Gecko 9+ present since version 1.9 that prevented restartless addon shutdown (error thrown during unload). Disabling, uninstalling or even updating affected versions will not complete until the browser is restarted.
· Added support for localisation of the options page - feel free to submit your language for inclusion in a future release.
· Fixed bug that caused SeaMonkey mail window's status bar to be blank - thanks to Stanimir Stamenkov for the report.
November 9th, 2011· Hotfix for improperly escaped JSON strings.
October 28th, 2011· Fixed support for application/json MIME type in Gecko 8+.
· Added support for JavaScript MIME types.
· Workaround for conflict with Firebug 1.8
September 3rd, 2011· Full support for Firefox Mobile and future multi-process incarnations of the desktop browsers.
· No longer confuses certain websites by default - you can override the default HTTP Accept header on a host-by-host basis to either omit or include the JSON MIME type, with an optional q-value.
· New options interface available from within the Add-ons Manager in Gecko 7.x-series browsers (Firefox 7, SeaMonkey 2.4) and above - older browsers can still access all options by opening about:config and looking under extensions.jsonovich.
July 2nd, 2011· Hotfix for corrupt JSON downloads on slow networks.
· Bug was present since version 1.2, thanks to Doug for the report.
June 14th, 2011· New preference to disable HTTP Accept header modification.
· New preferences to control which MIME types and file extensions should be treated as JSON.
· Some performance improvements.
May 27th, 2011· Brings support for opening .json files from disk.
· Restores HTTP Accept header functionality that was lost for Firefox 4 in 1.8's initial restartless support.
· Uses Javascript strict mode.
· No longer uses XUL overlays at all, these cannot be made restartless.
· Can now be disabled and re-enabled on-demand in all supported browsers from the addon manager without restarting (older browsers will still nag to restart, but most of the script is actually unloaded already).
April 6th, 2011· Fixed bug where arrays were displayed as objects.
September 21st, 2010· Fixes long lines bug (thanks to W.Elwood08), and adds support for aplication/jsonrequest MIME type.
July 24th, 2010· Fixes issue #2, a code folding bug.
May 21st, 2010· Adds support for code folding.
January 27th, 2010· Adds the application/rdf+json MIME type.
November 4th, 2009· Adds application/json to the default Accept header to provoke CouchDB and similar services to return content with type application/json rather than text/plain.
August 22nd, 2009· Changing maxVersion to Firefox 3.5 (verified working in 3.5b4pre)