Update Tendermint to v0.31.3

[alexanderbez]

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• Wrote tests

• Updated relevant documentation (docs/)

• Added a relevant changelog entry: sdkch add [section] [stanza] [message]

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[liamsi]

To fix the failing test (Test_multiSigKey_Properties), you will have to manually update the expected key there:

Index: client/keys/show_test.go
===================================================================
--- client/keys/show_test.go	(revision ce82e01ec416e6348192595e451bfd4e92eb5583)
+++ client/keys/show_test.go	(date 1554245452000)
@@ -23,8 +23,8 @@
 
 	assert.Equal(t, "myMultisig", tmp.GetName())
 	assert.Equal(t, keys.TypeMulti, tmp.GetType())
-	assert.Equal(t, "79BF2B5B418A85329EC2149D1854D443F56F5A9F", tmp.GetPubKey().Address().String())
-	assert.Equal(t, "cosmos10xljkk6p32zn98kzzjw3s4x5g06k7k5lz6flcv", tmp.GetAddress().String())
+	assert.Equal(t, "D3923267FA8A3DD367BB768FA8BDC8FF7F89DA3F", tmp.GetPubKey().Address().String())
+	assert.Equal(t, "cosmos16wfryel63g7axeamw68630wglalcnk3l0zuadc", tmp.GetAddress().String())
 }
 
 func Test_showKeysCmd(t *testing.T) {

[alexanderbez]

Indeed, updated @liamsi 👍

[alexanderbez]

Nothing consequential here -- merging with a single approval.