Hey! Currently you can only order your library by "publication date" which depends on the edition of the book, the reprints and so on. I keep my books in order of first publication date.
Example: my copy of Moby Dick was published in 1994, but Moby Dick was FIRST published in 1851.
I think having the possibility of ordering books by first publication date could be time-sparing when doing some detailed research into one's library.