Ver 2.0.4:
* Revert to v2.0.2, merge 2.0.3a0 changes (except "spell correct suggestion" feature). Newest source code is on GitHub!
* Bug fix: Annoying bug makes this landing page shows up every time browser updates, not just Quick Dictionary updates.
* Bug fix: Nasty bug makes result showing on all sidebar when multiple windows are opening, or showing result on (wrong) other windows's sidebar if currently focused window's sidebar is not opened.
* Now the shortcut key for opening quick popup/showing result is Ctrl + E (or Cmd + E on macOS)!
* First update in almost two years! More interesting feature updates are coming!

Ver 2.0.3a0:
* Spell correct suggestion (for English only). https://imgur.com/UEw8sKg
* Quick Popup is now live-resizable by drag-and-drop the bottom-right corner of the popup.
* Some small bug fixes (including one about inconsistent default language when addon is first installed).

Ver 2.0.2:

* Bug fix: NULL language error makes extension freeze at "getting result..." for a while.
* Suggestion will now hide immediately after pressing "enter" or buttons other than A-Z and 0-9.
* Add some exception handlers.
* Use fetch API instead of XHR.

Ver 2.0.1:

* Add some options to control how Quick Dictionary looks on HiDPI devices: global size, Quick Popup's width and height.

Ver 2.0.0:

* Add Context Menu support!
* Quick shortcut key "Ctrl+Shift+Q" is now working again.
* An introduce page will be opened after the extension is installed/updated (to introduce new features in v2.0.0 update).

Ver 2.0.0a2:

* Rewrite most of the part of the extension.
* Follow Firefox's Photon Design rules.
* Sidebar support!
* Quick Popup feature: now translation popup will show on your current site as an (iframe) element, instead of opening a new window.
* Drop-down suggestion (autocomplete) for input field.

Ver 1.2.5
* Fix the dark background makes the text unseeable if using dark GTK theme in linux.
* Bug fixed: Constantly disable and reenable the addon makes the "quick button" open multiple window when clicking on it.

Ver 1.2.4
* If firefox is on linux machine, open new window with type: 'normal' instead of type: 'panel'.

Ver 1.2.3
* Fix the bug in 1.2.2: Popup (window mode) can't responsive when resize anymore after trying to use the search function.
* Various minor UI fixes, such as search bar/search button size.

Ver 1.2.2
* Added English support for most of extension's UI.
* Now clicking to any non-external wiktionary link will not force-open new tab anymore. (https://gfycat.com/ShortVioletGoldfinch)
* Search bar will not disappear anymore when you scrolled down. (https://gfycat.com/EvilFloweryFattaileddunnart)
* Recover some previously hidden contents. (http://i.imgur.com/RIwOAI0.png)
* Popup window-mode is now responsible when you resize it. (https://gfycat.com/GranularAmpleGlowworm)

Ver 1.2.1
* Now it's possible to use the Ctrl+Q hotkey to open up the extension's "browser action" popup. Though you can't turn on/off this feature for now.
* Added Quick Button: A button will show up right above your selected text. Click on it will open a popup (in new window) that show the text meanings. It's possible to tweak this feature by going to the "Add-on" Section of Firefox.
* From now on, you can choose the Wiktionary's language version you want, and you can choose up to 2 different one. It's possible to tweak this feature by going to the "Add-on" Section of Firefox.
* Added autofocus for the text input in extension's popup.