1.3.1

A standalone copy now counts as standalone even when it lost a version tie.

1.3.0 said every registered copy was considered. It was not: duplicates are kept in a separate list, and two plugins carrying the identical version means one of them is recorded there rather than given a seat. If the one that lost the tie happened to be the plugin the site owner had installed, its screens disappeared with nothing to explain why.

Found by installing it three ways — standalone, bundled, and both at once — rather than by reading the code.

200 tests.