openpgp: Add a prelude file to import things related to certificates

  - Add `openpgp/src/cert/prelude.rs` to import most types and traits
    related to certificates.

  - Use it instead of using the types and traits individually.

1 files changed, 1 insertions, 4 deletions

diff --git a/autocrypt/src/cert.rs b/autocrypt/src/cert.rs
index b1bef161..4063e97a 100644
--- a/autocrypt/src/cert.rs
+++ b/autocrypt/src/cert.rs
@@ -1,9 +1,6 @@
 use sequoia_openpgp as openpgp;
 use openpgp::packet;
-use openpgp::cert::{
-    CertBuilder,
-    CipherSuite,
-};
+use openpgp::cert::prelude::*;
 use openpgp::types::{
     KeyFlags,
 };