Ledger integration (cosmos#931)

Merges the keybase and Ledger code from go-crypto (which is no more) into the SDK
Adds support for Ledger into gaiacli
Cherry-picks updated error handling from cosmos#1158

CHANGELOG.md

@@ -12,6 +12,7 @@ BREAKING CHANGES
 * Removed MsgChangePubKey from auth
 * Removed setPubKey from account mapper
 * Removed GetMemo from Tx (it is still on StdTx)
+* Keybase and Ledger support from go-crypto merged into the SDK in the `crypto` folder
 * Gov module REST endpoints changed to be more RESTful
 * [cli] rearranged commands under subcommands
 * [stake] remove Tick and add EndBlocker
@@ -46,6 +47,9 @@ FEATURES
 * [types] Switches internal representation of Int/Uint/Rat to use pointers
 * [gaiad] unsafe_reset_all now resets addrbook.json
 * [democoin] add x/oracle, x/assoc
+* [gaiacli] Ledger support added
+  - You can now use a Ledger with `gaiacli --ledger` for all key-related commands
+  - Ledger keys can be named and tracked locally in the key DB
 * [gaiacli] added an --async flag to the cli to deliver transactions without waiting for a tendermint response
 
 FIXES

Gopkg.toml

@@ -36,10 +36,6 @@
   name = "github.com/mattn/go-isatty"
   version = "~0.0.3"
 
-[[constraint]]
-  name = "github.com/pkg/errors"
-  version = "~0.8.0"
-
 [[constraint]]
   name = "github.com/spf13/cobra"
   version = "~0.0.1"
@@ -49,32 +45,36 @@
   version = "~1.0.0"
 
 [[constraint]]
-  name = "github.com/stretchr/testify"
-  version = "~1.2.1"
-
-[[constraint]]
-  name = "github.com/tendermint/abci"
-  version = "=0.12.0"
+  name = "github.com/pkg/errors"
+  version = "=0.8.0"
 
 [[constraint]]
-  name = "github.com/tendermint/go-crypto"
-  version = "=0.6.2"
+  name = "github.com/stretchr/testify"
+  version = "=1.2.1"
 
 [[constraint]]
   name = "github.com/tendermint/go-amino"
-  version = "=0.9.9"
+  version = "=0.10.1"
 
 [[constraint]]
   name = "github.com/tendermint/iavl"
-  version = "=0.8.0-rc0"
+  revision = "481b89cbbe6a641f7f6cb5db92b30b20f5a2e001"
 
 [[constraint]]
   name = "github.com/tendermint/tendermint"
-  revision = "696e8c6f9e950eec15f150f314d2dd9ddf6bc601"
+  revision = "8412b75b1070ac023405e8228e017ed36531fe1b"
 
-[[override]]
+[[constraint]]
   name = "github.com/tendermint/tmlibs"
-  revision = "0c98d10b4ffbd87978d79c160e835b3d3df241ec"
+  version = "=0.9.0"
+
+[[constraint]]
+  name = "github.com/bartekn/go-bip39"
+  branch = "master"
+
+[[constraint]]
+  name = "github.com/zondax/ledger-goclient"
+  revision = "065cbf938a16f20335c40cfe180f9cd4955c6a5a"
 
 # this got updated and broke, so locked to an old working commit ...
 [[override]]

baseapp/baseapp.go

@@ -7,7 +7,7 @@ import (
 
 	"github.com/pkg/errors"
 
-	abci "github.com/tendermint/abci/types"
+	abci "github.com/tendermint/tendermint/abci/types"
 	cmn "github.com/tendermint/tmlibs/common"
 	dbm "github.com/tendermint/tmlibs/db"
 	"github.com/tendermint/tmlibs/log"
@@ -85,7 +85,6 @@ func NewBaseApp(name string, cdc *wire.Codec, logger log.Logger, db dbm.DB) *Bas
 		txDecoder:  defaultTxDecoder(cdc),
 	}
 	// Register the undefined & root codespaces, which should not be used by any modules
-	app.codespacer.RegisterOrPanic(sdk.CodespaceUndefined)
 	app.codespacer.RegisterOrPanic(sdk.CodespaceRoot)
 	return app
 }
@@ -135,7 +134,7 @@ func defaultTxDecoder(cdc *wire.Codec) sdk.TxDecoder {
 		// are registered by MakeTxCodec
 		err := cdc.UnmarshalBinary(txBytes, &tx)
 		if err != nil {
-			return nil, sdk.ErrTxDecode("").Trace(err.Error())
+			return nil, sdk.ErrTxDecode("").TraceSDK(err.Error())
 		}
 		return tx, nil
 	}