Canonical name not used in .apvlvinfo

[quite]

Perhaps canonical names (resolving symlinks) should be used when storing last viewing settings/info in .apvlvinfo. If, for example, multiple bookmarks were to be made (and stored) I feel they should be per "real book" (imagining these pdfs to some extent as physical), rather than per virtual bookshelf instance (as the symlinks may be imagined).