Greasemonkey full changelog

New features:
When making a new user script, it will include a @match for the current page. (#3231)
Thank you community member Cerberus-tm!
Several new features in the built in script editor, most optional (enabled by default). (#3230)
Improved user interface around automatic updates, especially to detect more failure cases and explain them. (#3182)
Fixed bugs:
Do not block script installation when the @icon fails to download. (#3222)
Importing a user script backup that contains a script with a forward slash character in the name should work. (#3210)
Thank you community member nabijaczleweli!
Fixed cookie header handling for GM.xmlHttpRequest(). (Previously, it worked only when this was the last header.) (#3205)
Thank you community member syusui-s!
Fix partially obscured confirmation dialog when updating an edited script. (#3180)
Improved reliability of script execution at Firefox start up time. (#3117)
Thank you community member binki!
Improve GM.xmlHttpRequest() when privacy.firstparty.isolate is true. (#2985)
Thank you community member Scripter17!
Fix GM.xmlHttpRequest() when passing functions in the context. (#2701)

Greasemonkey has been a Firefox extension for well over a decade, with version 0.3.5 dating from 2005. We've grown and changed a lot over that time. With the upcoming Firefox 57 release, we need to change even more. Mozilla is completely replacing the extension system in Firefox, to align with the budding Browser Extension standard, based on/shared with Google Chrome.
As a result, version 4 of Greasemonkey is a nearly complete re-write. Its interface and feature set have been rebuilt in order to best to work with coming Firefox versions. A variety of compromises have been made. We've elected to make a rare backwards incompatible change.

Fixed bugs:
Fix compatibility with Firefox 54.

Feature enhancements:
Improve the performance of GM_getValue/GM_setValue. (#2197, #2025)
Add a rich tooltip to the Greasemonkey toolbar button. (#2377, #2418)
GM_getResourceText supports a second (responseType) parameter, for better compatibility with binary files. (#2376)

Better support for scripts with a very large number of @include/@exclude/@match rules. (#2318)
Display a notification to the user when there is a problem parsing an edited script. (#2319)
In GM_info the serving URL for an @resource is listed. (#2281)

Restored "more" link in Add-ons Manager, add metadata support to fill it. (#1944)
The Options window can (usually) be resized. (#2194)
Allow scripting about:reader pages. (#2195)

This is a quick release to fix one data corruption bug introduced in 3.4: Update checks can cause a script to be removed, rather than updated (#2274).

This is a quick release to fix one data corruption bug introduced in 3.4: Update checks can cause a script to be removed, rather than updated (#2274).

This is a quick release to fix one data corruption bug introduced in 3.4: Update checks can cause a script to be removed, rather than updated (#2274).

This is a quick release to fix one data corruption bug introduced in 3.4: Update checks can cause a script to be removed, rather than updated (#2274).