store UIDs along with c14n for faster and case-insensitive search
display search term in lowercase for op=index as well
armor: ignore comment header
keystore: accept ID64 in get_signatures
parser: handle cert revocation signatures
extracted function unix_to_iso_date
parser: added support for new packet format
parser: added support for user attribute packets
parser: extract timestamps and policy URI
parser: added option to disable signature checks
parser: renamed PGP_VERSION to PGP_VERSION_4
parser: relay timestamps and policy URI to handler
parser: relay key expiration to handler
parser: added preliminary support for V3 signatures
parser: extract signature level (0-3)
partially implemented op=vindex