Calibre 2.63.0最近发布了，Calibre是为电子书用户开发的一个免费开源的电子书图书馆管理应用。这个最新版本自带的正则表达式引擎更新，以支持Unicode9.0。
官方下载地址：https://calibre-ebook.com/download_linux
Calibre 2.60.0 更新日志：
New Features:
News download: Allow controlling which periodicals are automatically sent to a specific email in Preferences->Sharing by email
Edit Book: Update regex engine to support Unicode 9.0
Bug Fixes:
Edit metadata dialog: Fix pasting ISBN from clipboard not stripping garbage characters after a valid ISBN.
Edit Book: Also refresh the Preview and Live CSS panels after performing any action that changes files other than the currently displayed file.
E-book viewer: Fix the show metadata button not reading EPUB 3 metadata
MOBI Output: Fix <hr> not being rendered as full-width in old MOBI files
CSV Catalog output: Fix incorrect formatting of is_multiple custom columns.
CSV Catalog Output: Separate multiple authors with & instead of comma. Fixes problems when the author name contains commas.
EPUB 3 metadata: Fix updating metadata in EPUB 3 files not overwriting existing authors.
Fix duplicate detection when adding books not working when the book title has leading or trailing whitespace
Book details panel: Pick the color used for links from the current system color theme
Windows: Fix file selection dialogs blurry on HiDPI monitors
Improved news sources:
Gosc Niedzielny
Nikkei Free
Financial Times (UK)
Foreign Affairs
Berlin Policy Journal
Gazet van Antwerpen
Hurriyet
在 Ubuntu 16.04, Ubuntu 15.10, Ubuntu 15.04, Ubuntu 14.04 中安装 Calibre 2.63.0 方法：
sudo -v && wget -nv -O- https://raw.githubusercontent.com/kovidgoyal/calibre/master/setup/linux-installer.py | sudo python -c "import sys; main=lambda:sys.stderr.write('Download failedn'); exec(sys.stdin.read()); main()"