Calibre 2.23 发布，此版本更新内容如下：
新特性：
Allow adding an empty ebook in various formats to existing book records by right clicking the Add Books button
Add ability to create additional empty formats to the 'Add empty book' command
News download: Add API to cleanly abort the download of an article during the preprocess stage based on the article's contents.
Update the version of Qt bundled with calibre to 5.4.1. This fixes various minor bugs, most notably, improving text rendering on linux.
Bug 修复：
MOBI Input: Fix links not working in viewer for MOBI files that contain anchors placed on linebreak elements.
Closes tickets: 1439450
Book details panel: Fix copying Path link by right clicking on it not working.
Closes tickets: 1437756
Fix a regression that caused importing of a single book from a directory to fail if the directory has no ebook files in it
Column Icons: Fix apostrophes in icon filenames causing errors.
Closes tickets: 1436690
Edit Book: Fix a regression that caused Remove unused CSS to fail on invalid CSS selectors, instead of ignoring them
Open With: Fix open with failing to get list of default programs on windows if the registry contains missing ProgIDs.
Closes tickets: 1434990
新闻源改进
Esquire
Courrier International
CNET
Tagesschau
此版本现已提供下载：http://calibre-ebook.com/download。
Calibre是电子书管理软件，支持Amazon、Apple、Bookeen、Ectaco、Endless Ideas、Google/HTC、Hanlin Song设备及格式，功能十分强大。
来自:开源中国社区
