Failing test with activerecord 5.2

[lucaskanashiro]

After run the tests using activerecord 5.2 I got the failure below:

# Running:

...........................F..............................

Finished in 0.858197s, 67.5836 runs/s, 240.0381 assertions/s.

  1) Failure:
TreeTestWithCounterCache#test_update_parents_counter_cache [/<<PKGBUILDDIR>>/test/acts_as_tree_test.rb:501]:
Expected: 3
  Actual: 4

58 runs, 206 assertions, 1 failures, 0 errors, 0 skips

We are moving towards Rails 5 in Debian and this fix will be appreciated.

[felixbuenemann]

Maybe related to #63.

[felixbuenemann]

I've just released acts_as_tree 2.8.0 on rubygems, which should fix this issue.