2.10 1.3 to 1.4-M1 upgrade

2.10.1 Changes

• New "Daisy Books" functionality for publishing books/manuals from Daisy documents. See the books documentation.
• Some features added as part of the Daisy Books implementation that are useful outside of books:
• full ID and fragment ID support in the editor: there is now a dialog for assigning IDs to elements, and the link dialogs allow to select the target ID (from the current document or other documents). Also added a "Go to" dialog that allows to scroll to the element with a certain ID, and also shows a TOC of the current document.
• for images, the size can now be specified (separately for HTML and PDF rendering)
• for tables, column widths can now be specified (separately for HTML and PDF rendering)
• footnote support
• "link to new" functionality in the document editor and navigation tree editor makes it possible to insert links to new documents