Corey Farwell 017e3e94d0 Rollup merge of #41281 - steveklabnik:update-submodules2, r=guillaumegomez
bump book repos

Not ready to merge yet; I'd like to see what tidy says.
2017-04-13 22:01:26 -04:00
..
2017-04-12 00:45:54 +03:00