v0.0.1, 2018-03-08 -- Initial beta release.
v0.0.2, 2018-07-17 -- use isbnlib-3.9.
v0.0.3, 2020-01-17 -- (NOT RELEASED).
v1.0.0, 2020-03-23 -- allow isbnlib-3.10.*.
v1.0.1, 2020-05-25 -- query api using isbn13 AND isbn10 (close issue #1).
