* Do not crash when PKCS#12 file contains no private key and/or main certificate.
* Add changelog fragment.
* Call getters only once each, check explicitly for None.
* Add test.
* Also 'parse' correctly PKCS#12 file with no private key.
* Fix CI test groups.
* Make files more similar.
* Run most tests in both cloud and OS-specific environments.
* Run ACME tests in both cloud and OS-specific environments.
* Use different Python version for 2.9 cloud test.
* Revert "Run ACME tests in both cloud and OS-specific environments."
This reverts commit 967bda9438.
* Revert "Run most tests in both cloud and OS-specific environments."
This reverts commit 6e9f090afd.