New Features in Ver 4.4

・Features
　・Opening a page of the popup in a new tab
　　It can open a page of the popup now. This feature is available on other extension that uses popup also.

New Features in Ver 4.3

・Features
　・Synchronization
　　Synchronizing options is supported now.

New Features in Ver 4.2

・Features
　・Text Selection
　　Text selection in the popup is enabled.

New Features in Ver 4.1

・Features
　・Shortcut
　　Users can open with a shortcut key. The default is "Alt+Shift+O". The shortcut key can be edited (refer to this link).
　・Protocol Detection
　　The extension can detect a protocol of a target whether http or https now. A user does not need to have a choice which is http when target is https. However, bookmark and selection does not support this.

・Others
　・For Developers
　　Refactor code.

New Features in Ver 4.0

・Features
　・User Agent
　　Changing the user agent is available. This feature requires a host permission. Open the options page and enable the host permission to enable this feature. This feature effects all pages of extensions which you have installed.

・Others
　・For Users
　　Fix problem which some options are not saved correctly.
　・For Developers
　　Refactor code.

New Features in Ver 3.1

・Features
　・Icon
　　Options can be opened from a menu which is displayed by right-clicking the icon.

　・UI
　　Change appearance slightly.

New Features in Ver 3.0

・Features
　・Options
　　Now you can fix the initial page of the popup. This is useful for websites that list so many links.
　・Tab
　　Selected tab and current page can be opened in the popup now.
　・Additional Permissions
　　You can allow additional permissions on the options page. Currently, it supports only bookmark permission.
　・Browser compatibility
　　Change the oldest version of support 60 to 74.
　・Popup
　　A placement of a popup is available. You can choose opening the page in all popups or not. For more details, see the options page.

・Others
　・For Developers
　　Unify a format of br tags.
　　Fetch API replaces XmlHttpRequest.
　　Reduce number of times of reading json files.
　　Split all processes into functions.

New Features in Ver 2.2

・Appearance
　・Options
　　The choosing format of the targets is the same to "Open in Sidebar".
　・Performance
　　Decrease load of the browser to omit useless processing.

・Others
　・For Developers
　　Information of preferences have been written in json files.
　　All files are converted to UTF8.
　　"background.html" replaced "background.js" to prepare import statement in the future.
　　The system of regenerating context menus moved "option.js". In Ver2.2, context menus are regenerated when options are changed.

New Features in Ver 2.1

・Appearance
　Fix an issue that the message which is displayed when the user moves over the icon is English.

・Others
　・For Developers
　　Needless default values of every element in options.html have been deleted.
　　The target version is fixed to 60.0 or higher.

New Features in Ver 2.0

・Features
　・Targets
　　"View source" has been added.
　　You can view the source in the popup.
　　To enable wrapping, "Wrap Long Lines" needs to be available in advance.

　・Options
　　You can define preferences for the extension in the page of add-on.
　　To fix a protocol and a target, you can open the popup quicker.

・Others
　・For Developers
　　Japanese files and English files exist until this version, but all descriptions are moved to message.json and files of "_ja" have been omitted.

Removed a dammy url in the tutorial.