add seed file installed db
removekey action: Remove installed keys
Merge pull request #19 from gentoo/rmkey

Remove key action
binary keyring support

Import specified trusted keys to a specified keyring file.
Merge pull request #20 from gentoo/keyring

Binary keyring support
add gkey-gen implementation (GLEP 63 openPGP key generator)

Developers and users are now able to create GLEP 63 based GPG keys