Add support for Checks (#853)

- See https://github.com/ripple/rippled/pull/2245

* Add support for depositAuth flag

* Upgrade ripple-binary-codec to 0.1.13

test/fixtures/requests/index.js

@@ -38,6 +38,17 @@ module.exports = {
     normal: require('./prepare-escrow-cancellation'),
     memos: require('./prepare-escrow-cancellation-memos')
   },
+  prepareCheckCreate: {
+    normal: require('./prepare-check-create'),
+    full: require('./prepare-check-create-full')
+  },
+  prepareCheckCash: {
+    amount: require('./prepare-check-cash-amount'),
+    deliverMin: require('./prepare-check-cash-delivermin')
+  },
+  prepareCheckCancel: {
+    normal: require('./prepare-check-cancel')
+  },
   preparePaymentChannelCreate: {
     normal: require('./prepare-payment-channel-create'),
     full: require('./prepare-payment-channel-create-full')

test/fixtures/requests/prepare-check-cancel.json

@@ -0,0 +1,3 @@
+{
+  "checkID": "49647F0D748DC3FE26BDACBC57F251AADEFFF391403EC9BF87C97F67E9977FB0"
+}

test/fixtures/requests/prepare-check-cash-amount.json

@@ -0,0 +1,7 @@
+{
+  "amount": {
+    "currency": "XRP",
+    "value": "1"
+  },
+  "checkID": "838766BA2B995C00744175F69A1B11E32C3DBC40E64801A4056FCBD657F57334"
+}

test/fixtures/requests/prepare-check-cash-delivermin.json

@@ -0,0 +1,7 @@
+{
+  "deliverMin": {
+    "currency": "XRP",
+    "value": "0.8"
+  },
+  "checkID": "838766BA2B995C00744175F69A1B11E32C3DBC40E64801A4056FCBD657F57334"
+}

test/fixtures/requests/prepare-check-create-full.json

@@ -0,0 +1,10 @@
+{
+  "destination": "rsA2LpzuawewSBQXkiju3YQTMzW13pAAdW",
+  "sendMax": {
+    "currency": "XRP",
+    "value": "1"
+  },
+  "destinationTag": 2,
+  "expiration": "2018-09-24T21:21:50.000Z",
+  "invoiceID": "1F40FC92DA241694750979EE6CF582F2D5D7D28E18335DE05ABC54D0560E0F53"
+}

test/fixtures/requests/prepare-check-create.json

@@ -0,0 +1,7 @@
+{
+  "destination": "rsA2LpzuawewSBQXkiju3YQTMzW13pAAdW",
+  "sendMax": {
+    "currency": "XRP",
+    "value": "1"
+  }
+}