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Textastic 8 will have an option to ask for the password when connecting to (S)FTP servers.

Textastic 8 will support ECDSA and Ed25519 SSH keys.

Textastic 8 will allow you to select any installed monospaced font. You can use apps like AnyFont or Apple Configurator 2 to install custom fonts.

This will work in Textastic 8.

This will be available in Textastic 8.