owenthereal/upterm 0.5.0

Release 0.5.0 is a big release that includes numerous bug fixes and new features! Here are the highlights:

• Fix the issue that upterm doesn't read keys from ssh-agent if it's available.
• upterm adds the private key to ssh-agent, similar to ssh
• upterm and uptermd both handle ssh public-key certificate authentication
• Add --debug flag to uptermd
• Bump upstream establishing connection timeout to 1 minute
• Remove deprecated server ping
• Sign public key using a cert between ssh proxy and upstreams
• Prefer ed25519 over RSA on upterm host
• Upgrade protobuf to 1.25.0

Note that for this new release, you need the latest upterm client to communicate with the uptermd community server (uptermd.upterm.dev). Follow https://github.com/owenthereal/upterm#upgrade to upgrade upterm.

Please report bugs if you run into any issue. Happy upterming!