Calibre 2.21 发布，此版本现已提供下载：http://calibre-ebook.com/download。 更新内容如下： 新特性 Allow opening ebook files and covers in external applications by simply right clicking on them in the Book Details panel. Tag Browser: Make rename and delete for items in the Tag Browser restrict themselves to the current Virtual Library (if any). Conversion: Use a new (written from scratch) implementation of CSS Level 3 selectors that fixes various bugs in handling of the more advanced/uncommon CSS selectors such as nth-last-child() Edit Book: Allow restoring of disabled confirmation prompts in preferences and add a confirmation when removing saved searches Edit ToC button: Remember the last used ebook formats Bug 修复 E-book viewer: Fix regression that prevented pasting of text with formatting from the viewer. Closes tickets: 1428018 Table of Contents Editor: Fix selecting a location inside a file and then clicking on another file causes the previous location to be used in the new file. Closes tickets: 1428212 DOCX Input: Fix incorrect bold font weight being used for heading styles even if the style definition does not specify bold. Closes tickets: 1430831 AZW3 Input: Fix a bug that prevented conversion of AZW3 files that contained an empty CSS media block. Closes tickets: 1426220 PDF Output: Fix incorrect rendering of text in elements that use font-variant:small-caps and also have children. Closes tickets: 1425094 Get Books: Update Amazon Europe, Empik and CDP store plugins PDF Output: Fix incorrect conversion of source document that specify dir='rtl' on the root element. Closes tickets: 1429292 PDF Output: Ignore unparseable links instead of aborting the conversion on them. Closes tickets: 1429282 Fix reading metadata from filenames tester not working for dates before 1900. Closes tickets: 1424607 Linux binary install: Fix SSL CA certificates not being detected on Fedora based distributions Books list: Fix column alignment incorrectly propagating when changing libraries FB2 Input: Do not put a border around images Fixes for various incompatibilities with (Py)Qt 5.4.1 which is used by some calibre distro packages on linux Fix error when running calibredb backup_metadata on a library that contains book records with no path information Edit Book: Fix extra search being hidden when removing a saved search Fix a regression in 2.20 that prevented some changes to per-library preferences from being saved Linux installer: Do not register application/octet-stream as one of the mimetypes calibre can handle 新新闻资源 Pando Daily by Darko Miletic 改进新闻资源 Spektrum der Wissenschaft New Musical Express The Daily Mirror 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。 Calibre 2.21 发布，电子书管理软件下载地址
