Changed calls to the cogent3 function TreeAlign to tree_align as that function changed in the last release of cogent3.
Added a test fixture data_dir to retrieve the test data directory relative to the conftest.py testing configuration file's location. This will make testing resilient to pytest being run in any parent directory.
Changed calls to the cogent3 function TreeAlign to tree_align as that function changed in the last release of cogent3.
Added a test fixture
data_dirto retrieve the test data directory relative to theconftest.pytesting configuration file's location. This will make testing resilient to pytest being run in any parent directory.