* Remove read_only_property and precisely type all these getters

* flake8

* unused

* Drop supported for older LibreSSL

3.1 covers the oldest version used by versions of Alpine and OpenBSD that are supported by their upstreams.

* Remove tests that are now unused

* Update CHANGELOG.rst

Co-authored-by: Paul Kehrer <paul.l.kehrer@gmail.com>

Co-authored-by: Paul Kehrer <paul.l.kehrer@gmail.com>

we don't support these but advanced users may make use of them

* Allow to serialize extension values as DER bytes string.

* Prepare test for SignedCertificateTimestamps.

* Attempt to build against BoringSSL in CI

* Check for BoringSSL in the SSL bindings

* Check for BoringSSL in the err bindings

* Check for BoringSSL in the pkcs7 bindings

* Check for BoringSSL in the bignum bindings

* Check for BoringSSL in the EVP bindings

* Check for BoringSSL in the X.509 verify bindings

* Convert CRL creation to Rust

* fixes

* small reflows

* Delete all teh code

* flake8

* Convert CSR creation to Rust

* put this back

* unused

* coverage

* Convert x.509 certificate generation to Rust

* flake8

* Coverage shenangins

* moar hashes

* moar hashes