More than a few people requested Github and Bitbucket to support more than RSA keys but they've both ignored the request for ECDSA for the last few years. The changes in 6.5 should inspire them to skip ECDSA and add Ed25519 as an option. Please Github and Bitbucket do everyone a favor and support modern keys. Next step is to save cpu cycles by using Curve25519 when available in the client. It's illogical not to.
