GWpy 2.0.4 Bug-fix release. Changes: - [#1304] added new `gwpy.testing.errors` module - [#1317, #1319] fixed warnings (or lack thereof) during testing - [#1318] fixed a deprecation warning from numpy - [#1320] migrated build and metadata to setuptools_scm The full list of changes associated with this change can be seen at https://github.com/gwpy/gwpy/pulls?q=is:pr+milestone:2.0.4.