Added "@connect" support
Added "@group" feature
Added "@origin" feature
Added "@unwrap" support
Added "@upload" feature for WebDAV (#22)
Added "Convert to UserCSS" option to Monaco Editor (where applicable)
Added "CSP Exclude" feature (#12)
Added "GM cookie" support
Added "innerText, innerHTML" support to "GM addElement"
Added default templates support in new script/CSS from toolbar popup and context-menu (support/issues/628)
Added Diff Viewer feature for manual updates
Added Direct Install notification (#21)
Added ESLint (10.6.0)
Added First-party isolation option (support/issues/431)
Added Keyboard shortcut feature
Added Light/Dark theme to GM popup
Added links to Help from Options
Added Monaco Editor (0.55.1) with IntelliSense (support/issues/623, #3)
Added Sidebar Editor feature
Added UserScript Wrapper (allows "return out of function" and "top-level await")
Deprecated browser API style metadata block entries
Deprecated Stylish/xStyle compatibility features
Disabled version check on Direct Install (#43)
Dropped "@document" support in userStyle
Fixed an issue in processing userCSS "@var" (from 2.68)
Fixed export on Android (#9)
Fixed shadow DOM userCSS insertion (Firefox 144) (#37)
Increased minimum version to Firefox 128 (released 2024-07-09) due to Firefox root certificate expiry on 2025-03-14
Moved "GM.info.script.injectInto" to "GM.info.injectInto" to match Violentmonkey
Moved multi storage APIs back under "GM getValues, GM setValues", "GM deleteValues" (support/issues/545) (created in 2.68 2023-03-30, changed in 2.69)
Removed "Convert to UserCSS" option from Direct Install
Removed "GM import, GM createObjectURL" API (support/issues/558) (from 2.68)
Removed a few known properties from "GM info"
Removed CodeMirror editor, JSHint, CSSLint, and js-beautify
Removed pre-2.68 (2023-05-29) migrate
Removed PSL (Public Suffix List) module API (support/issues/503) (from 2.68)
Updated "@grant none" to inject into the page
Updated "@inject-into" page to concatenate all "@require" into the same function scope (support/issues/518)
Updated "@require" to check for redirection to HTML (support/issues/544)
Updated "GM addValueChangeListener" to listen to other tabs only
Updated "GM fetch" (breaking change)
Updated "GM log"
Updated "GM popup" (breaking change)
Updated "GM.getResourceUrl" to return synchronously (also works with await)
Updated "GM.xmlHttpRequest" to return a Promise (breaking change)
Updated CodeMirror to 5.65.19 (standalone for Direct Install page only)
Updated duplicate new script confirmation (#23)
Updated GM API in preparation for MV3
Updated GM API to depend on "@grant" (breaking change)
Updated import from Stylus (2.3.14)
Updated Locale Maker to 1.10
Updated Options page user interface
Updated script Export button's function
Updated Toolbar popup user interface
Updated UserStyle implementation with regex() support

Added "Convert to UserCSS" option to Direct Install (where applicable)
Added window.external for GreasyFork (support/issues/582)
Dropped userstyles.org Web Install & remote update processes due site errors
Dropped Web Install in favour of Direct Install
Updated Direct Install user-interface (#2, support/issues/627)
Updated GreasyFork's processed install URLs

Added GM.info.isIncognito & GM.info.script.isIncognito
Fixed a typo error in GM getResourceUrl (#659) (from 2.68)
Fixed an issue with Custom Options CSS process (#293)
Removed openerTabId from GM openInTab on Android
Suppressed error logging on failure to inject installation confirmation (#601)
Upgraded js-beautify to 1.15.1

Added 'blob:' protocol support in relevant GM APIs
Fixed an issue with URL hash in Tab Scripts display (#576)
Updated GM xmlHttpRequest to accept headers: null (#569)

Fixed an oversight in scratchpad (from 2.68)
Upgraded js-beautify to 1.14.8

Moved GM setValue & GM deleteValue back to the background script

Added multi storage API options to GM getValue, GM setValue, GM deleteValue (#545)
Fixed an issue with processing sync storage (from 2.68)
Removed multi storage APIs GM getValues, GM setValues, GM deleteValues (#545) (from 2.68)

Added @include http* conversion (#429#issuecomment-1474408605)
Added @licence to popup Info page (#524)
Added @metaURL to Metadata
Added @metaURL to User Metadata
Added @updateURL to User Metadata
Added about:blank processing in @include
Added GM createObjectURL API (#558)
Added GM import API (#558)
Added GM.info.script.grant
Added GM.info.script.injectInto
Added GM.info.script.metadata
Added GM.info.script.require
Added GM.info.script.runAt
Added CodeMirror rulers addon (off by default)
Added Import from URL feature
Added manually imported script to Log
Added multi storage APIs GM getValues, GM setValues, GM deleteValues (#545)
Added multi-site Find scripts for this site
Added PSL (Public Suffix List) module API (#503)
Dropped 'browser_style' in preparation for MV3
Fixed a bug when there are more that one Metadata Block (#429#issuecomment-1474408605)
Fixed a color-picker replace issue with spaces in rgb/rgba colors
Fixed a few typos
Fixed an issue with Custom Options CSS application
Fixed the unsaved changes popup on script remote update
Increased minimum version to Firefox 93 (released 2021-10-05) (2 users below Firefox 95)
Mapped GM addScript to GM addElement
Mapped GM addStyle to GM addElement
Moved Developer Tools Debugger userscript listing to FireMonkey://userscript/
Removed Bundled Libraries feature (#539)
Removed pre-2.25 (2021-05-21) preference JSON import conversion (1 user below v2.25)
Removed v2.35 (2021-11-09) migrate (2 users below v2.55)
Removed v2.42 (2022-02-02) migrate (2 users below v2.55)
Updated GM addElement to return undefined in case of script
Updated GM getResourceText processing for better compatibility
Updated GM.info.namespace to return an empty string
Updated GM.info.scriptMetaStr to return data string
Updated updateURL to a link in popup Info page
Updated API script to handle script storage directly
Updated code in preparation for manifest v3
Updated GM3 API removal when both GM3/GM4 are granted, to storage API only
Updated module structure
Updated Options page navigation
Updated Toggle comment keyboard shortcut from Ctrl-Q to Ctrl-/ (like VS Code) due to conflict with Firefox Quit
Updated UI style
Updated unsuccessful GM fetch return to undefined (was null)
Upgraded CodeMirror to 5.65.13
Upgraded js-beautify to 1.14.7
Upgraded JSHint to 2.13.6

Fixed Toolbar popup Dark Theme application (#428) (from 2.33)

Fixed clearing script storage (#514)
Updated module structure

Fixed GM.xmlHttpRequest response issue (#429#issuecomment-1285915187) (from 2.60)

Fixed a typo issue on Android (#238#issuecomment-1279879268) (from 2.63)

Fixed remote @require injection order (#429#issuecomment-1279679774)

Fixed a userscript compatibility (#429#issuecomment-1259054723)

Fixed 'unsafeWindow not defined' in @require scripts (#429#issuecomment-1237045605)

Fixed GM.getResourceText issue (#429#issuecomment-1200339171) (from 2.41)
Fixed GM.xmlHttpRequest response issue (#497)
Fixed raw.githubusercontent.com install issue (#496) (from 2.57)
Updated GM.fetch to log and return parse errors (#497)

Updated CodeMirror keyMap process (#495)

Reverted keyMap src attribute (#495) (from 2.57)

Added @advanced support as @var alias
Added @preprocessor support in @var in UserStyle (not userCSS)
Added dropdown support in @advanced
Added image support in @advanced
Added null support in @var
Added misplaced "unit" support in @var
Added multiline select support in @var
Added Reset to User Variables
Fixed an error in enable script (from 2.54)
Fixed Sync storage issue (#485)
Fixed User Metadata & Storage not cleared when creating new script (#491)
Removed allowed install URL checklist (#480)
Updated unsafeWindow implementation
Updated Bulgarian (bg) locale
Updated fetch & XMLHttpRequest mapping workaround
Upgraded JSHint to 2.13.5

Added experimental @var (#293)
Fixed an issue with synch storage API

Fixed an error in deleting scripts (from 2.54) (#476)

Added Wrap code in IIFE (#429#issuecomment-1117288994)
Fixed an error in Beautify (from 2.53)
Removed Database Migrate 1.31 2020-03-13 (0 users)
Removed Database Migrate 1.36 2020-05-25 (0 users)
Removed Database Migrate 2.0 2020-12-08 (2 users) (use v2.53 to migrate)
Removed Database Migrate 2.5 2020-12-14 (0 users) (use v2.53 to migrate)
Removed Database Migrate 2.25 2021-05-08 (1 users) (use v2.53 to migrate)
Updated Regular Expression support process (#429#issuecomment-1116631171)
Updated the fetch & XMLHttpRequest mapping workaround

Mapped fetch & XMLHttpRequest to page window as a workaround for bug 1715249
Added Beautify feature (#320)
Added js-beautify 1.14.3

Fixed a typo in update storage value (from 2.51) (#461)

Added mouse-over title to Toolbar popup Info disabled Undo (#453)
Updated editor to update storage value if changed by a running script (#461)
Updated Locale Maker to v1.7
Updated script version compare function (#437)
Updated Sync storage process (#446)
Updated Toolbar popup Info Run to allow re-injection (#453)