Feature request: Prompt for password

[pylipp]

I don't want to write the password for the production DB in plain text into a file for security reasons.

Instead I'd like to enter it into a prompt when having selected a DB connection.

This could be the default if the password field in the config file is empty.

[TrayserCassa]

I was thinking about a command support, for example gopass get work/db_password and this command will be executed. Then gopass or other key manager would be asking for the gpg key. This would be really nice.