Upgrade to tm version 23.0. (#1927)

* Start upgrade. Currently go test ./... hangs.

* (squash this) Fix staking tests

* wip

* note what changes need to be made to make this work on tm v0.23.0

* Fix addr -> pubkey map

* cleanup code

* Fix slashing test failures except for begin blocker

* fix all slashing tests

* fix lcd tests

* Address PR comments

* add link to changelog.

* (wip) start making addrToPubkey map persisted. Since amino can't handle maps,
we have to change from what this commit is doing.

* Use the correct method of storing a map

* (squash this) address PR comments

* Did you run 'make'?

* remove gaiadebug binary

crypto/keys/keybase.go

@@ -199,7 +199,7 @@ func (kb dbKeybase) Get(name string) (Info, error) {
 
 // Sign signs the msg with the named key.
 // It returns an error if the key doesn't exist or the decryption fails.
-func (kb dbKeybase) Sign(name, passphrase string, msg []byte) (sig tmcrypto.Signature, pub tmcrypto.PubKey, err error) {
+func (kb dbKeybase) Sign(name, passphrase string, msg []byte) (sig []byte, pub tmcrypto.PubKey, err error) {
 	info, err := kb.Get(name)
 	if err != nil {
 		return

crypto/keys/keybase_test.go

@@ -146,7 +146,7 @@ func TestSignVerify(t *testing.T) {
 	cases := []struct {
 		key   crypto.PubKey
 		data  []byte
-		sig   crypto.Signature
+		sig   []byte
 		valid bool
 	}{
 		// proper matches

crypto/keys/types.go

@@ -16,7 +16,7 @@ type Keybase interface {
 	Delete(name, passphrase string) error
 
 	// Sign some bytes, looking up the private key to use
-	Sign(name, passphrase string, msg []byte) (crypto.Signature, crypto.PubKey, error)
+	Sign(name, passphrase string, msg []byte) ([]byte, crypto.PubKey, error)
 
 	// CreateMnemonic creates a new mnemonic, and derives a hierarchical deterministic
 	// key from that.