Log Message:
Update to 0.10

Upstream changes:
0.10    2019-06-26 11:28:13
        [BUGFIXES]
         * Fix unit tests to handle when both Devel::MAT and Devel::FindRef
           are available (RT129908)
           (No module code changes, purely tests)

0.09    2019-06-25 21:06:57
        [CHANGES]
         * Add a `refcount()` function that callers can use to build
           refcount-preserving tests
         * Adjust docs to explain more about the Devel::MAT use-case
         * General build file style updates