From a7a0121b095376e4cb6c1e6908cd7bf89ae15c61 Mon Sep 17 00:00:00 2001
From: Robert Habermeier <rphmeier@gmail.com>
Date: Thu, 17 Jan 2019 18:07:54 -0300
Subject: [PATCH] mark GRANDPA and consensus stuff as unstable (#1469)

---
 substrate/core/consensus/common/src/block_import.rs | 2 --
 substrate/core/consensus/common/src/lib.rs          | 6 +++++-
 substrate/core/finality-grandpa/src/lib.rs          | 2 ++
 3 files changed, 7 insertions(+), 3 deletions(-)

diff --git a/substrate/core/consensus/common/src/block_import.rs b/substrate/core/consensus/common/src/block_import.rs
index f4a60d435d..a683bc3019 100644
--- a/substrate/core/consensus/common/src/block_import.rs
+++ b/substrate/core/consensus/common/src/block_import.rs
@@ -137,8 +137,6 @@ impl<Block: BlockT> ImportBlock<Block> {
 	}
 }
 
-
-
 /// Block import trait.
 pub trait BlockImport<B: BlockT> {
 	type Error: ::std::error::Error + Send + 'static;
diff --git a/substrate/core/consensus/common/src/lib.rs b/substrate/core/consensus/common/src/lib.rs
index 23bde0c056..453b684430 100644
--- a/substrate/core/consensus/common/src/lib.rs
+++ b/substrate/core/consensus/common/src/lib.rs
@@ -14,7 +14,11 @@
 // You should have received a copy of the GNU General Public License
 // along with Substrate Consensus Common.  If not, see <http://www.gnu.org/licenses/>.
 
-//! Tracks offline validators.
+//! Common utilities for building and using consensus engines in substrate.
+//!
+//! Much of this crate is _unstable_ and thus the API is likely to undergo
+//! change. Implementors of traits should not rely on the interfaces to remain
+//! the same.
 
 // This provides "unused" building blocks to other crates
 #![allow(dead_code)]
diff --git a/substrate/core/finality-grandpa/src/lib.rs b/substrate/core/finality-grandpa/src/lib.rs
index aacee8fe7d..54833f2880 100644
--- a/substrate/core/finality-grandpa/src/lib.rs
+++ b/substrate/core/finality-grandpa/src/lib.rs
@@ -16,6 +16,8 @@
 
 //! Integration of the GRANDPA finality gadget into substrate.
 //!
+//! This crate is unstable and the API and usage may change.
+//!
 //! This crate provides a long-running future that produces finality notifications.
 //!
 //! # Usage