Unblock fee rate limit, add caption warning about mempool monitors

package.json

@@ -144,7 +144,7 @@
     "redux-thunk": "^2.3.0",
     "reselect": "^4.0.0",
     "sass": "^1.56.2",
-    "unchained-bitcoin": "^1.0.1",
+    "unchained-bitcoin": "^1.2.0",
     "unchained-wallets": "^1.0.3"
   }
 }

src/components/ScriptExplorer/OutputsForm.jsx

@@ -319,6 +319,10 @@ class OutputsForm extends React.Component {
                   }}
                 />
               </Box>
+              <Typography variant="caption" className={styles.outputsFormLabel}>
+                Refer to mempool monitoring websites to ensure your selected fee
+                rate is appropriate.
+              </Typography>
             </Grid>
 
             <Grid item xs={4}>

src/reducers/transactionReducer.js

@@ -3,7 +3,6 @@ import {
   Network,
   P2SH,
   estimateMultisigTransactionFee,
-  validateFeeRate,
   validateFee,
   validateOutputAmount,
   satoshisToBitcoins,
@@ -12,6 +11,9 @@ import {
   unsignedMultisigTransaction,
   unsignedMultisigPSBT,
   unsignedTransactionObjectFromPSBT,
+  checkFeeRateError,
+  getFeeErrorMessage,
+  FeeValidationError,
 } from "unchained-bitcoin";
 import updateState from "./utils";
 import { SET_NETWORK, SET_ADDRESS_TYPE } from "../actions/settingsActions";
@@ -154,15 +156,27 @@ function deleteOutput(state, action) {
 
 function updateFeeRate(state, action) {
   const feeRateString = action.value;
-  const feeRateError = validateFeeRate(feeRateString);
+
+  // Gets the error type. Useful for conditionally displaying errors.
+  const feeRateError = checkFeeRateError(feeRateString);
+
+  // Get the fee. Ignore rate-too-high errors because this value creates
+  // problems when trying to author a CPFP.
   const fee =
-    feeRateError === ""
+    feeRateError === null ||
+    feeRateError === FeeValidationError.FEE_RATE_TOO_HIGH
       ? setFeeForRate(state, feeRateString, state.outputs.length)
       : "";
 
+  // Get the error message for the error type if error is not rate-too-high.
+  const feeRateErrorMessage =
+    feeRateError !== FeeValidationError.FEE_RATE_TOO_HIGH
+      ? getFeeErrorMessage(feeRateError)
+      : "";
+
   return updateState(state, {
     feeRate: feeRateString,
-    feeRateError,
+    feeRateError: feeRateErrorMessage,
     fee,
     feeError: "",
   });