[v0.2.2](https://github.com/shnizzedy/cpac-python-package/releases/tag/v0.2.2) [enables Singularity](https://github.com/shnizzedy/cpac-python-package/issues/4) ≥ [2.5.0](https://travis-ci.org/github/shnizzedy/cpac-python-package/builds/684359078), but Singularity 3.0 is sufficiently different from Singularity 2 that [this package does not yet work with Singularity 3](https://github.com/shnizzedy/cpac-python-package/pull/15#issue-414729636).
v0.2.2 enables Singularity ≥ 2.5.0, but Singularity 3.0 is sufficiently different from Singularity 2 that this package does not yet work with Singularity 3.