Calibre 2.31 发布，更新内容如下：
E-book viewer: Make the search engine used for searching for selected text configurable (in the Miscellaneous section of the viewer preferences)
E-book viewer: Fix dragging to select text with the mouse causing the page to slide sideways in paged mode, if the mouse leaves the text area.
Closes tickets: 1464862
E-book viewer: Fix transitioning between full screen mode and normal mode sometimes causing current position to not be preserved.
Closes tickets: 1466082
AZW3 Input: Ignore incorrect text encoding (incorrectly encoded bytes are now replaced by placeholders) instead of erroring out.
Closes tickets: 1465769
Get Books: Update Legimi and CDP store plugins for website changes
Fix Cybook Nolimbook not being detected in linux and OS X.
Closes tickets: 1464382
DOCX Output: Fix internal hyperlinks being ignored when they point to a HTML file whose <body> element has an id.
Closes tickets: 1464086
Edit Book: Fix groups in replace template being interpreted backwards when search direction is up
Searching: When search as you type is active, do not change automatically change focus to the book list when searching, unless the user presses Enter.
Closes tickets: 1463042
Font subsetting: Fix subsetting removing some needed ligatures when subsetting some Arabic fonts
Prevent errors when testing email sending even if stderr on the host machine is broken
Various Ukranian news sources by rpalyvoda
El Mercurio Chile
Sydney Morning Herald
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。