[PATCH] Add --edit option to generate subcommand

[Tobias Girstmair]

On Thu, May 16, 2019 at 05:12:55PM +0200, Mildred Ki'Lya wrote:
>When creating passwords, it's often very useful to add contextual
>information about it at creation time, such as the e-mail address used
>or the login name. With the --edit flag, it's possible to modify the
>password file before it is encrypted.

+10 from me! My openpgp card takes multiple seconds to decrypt an entry, 
so this is very convenient. Your patch also LGTM, reusing mostly 
snippets from cmd_edit().