### Major changes between OpenSSL 1.1.1 and OpenSSL 3.0 [under development]
+ * Remove the `RAND_DRBG` API.
* Deprecated the `ENGINE` API.
* Added `OPENSSL_CTX`, a libcrypto library context.
* Interactive mode is removed from the 'openssl' program.
* Added a proper HTTP(S) client to libcrypto supporting GET and POST,
redirection, plain and ASN.1-encoded contents, proxies, and timeouts.
* Added util/check-format.pl for checking adherence to the coding guidelines.
- * Added OSSL_SERIALIZER, a generic serializer API.
+ * Added OSSL_ENCODER, a generic encoder API.
* Added OSSL_PARAM_BLD, an easier to use API to OSSL_PARAM.
* Added error raising macros, ERR_raise() and ERR_raise_data().
* Deprecated ERR_put_error().