Update carbon-fields and carbon-field-number to fix blank settings screen.

vendor/htmlburger/carbon-field-number/package.json

@@ -22,7 +22,7 @@
     "babel-loader": "^8.0.2",
     "babel-plugin-module-resolver": "^3.1.1",
     "cross-env": "^5.2.0",
-    "css-loader": "^0.1.0",
+    "css-loader": "^1.0.0",
     "mini-css-extract-plugin": "^0.4.4",
     "node-sass": "^4.9.4",
     "optimize-css-assets-webpack-plugin": "^5.0.1",

vendor/htmlburger/carbon-fields/.nvmrc

@@ -0,0 +1 @@
+lts/*

vendor/htmlburger/carbon-fields/README.md

@@ -8,7 +8,7 @@ Carbon fields can be used as a composer package for easy creation of custom fiel
 
 Custom fields can be created for post types, taxonomy terms, users, comments, options, navigation menus and even widgets.
 
-Supports PHP5.3 or higher.
+Supports PHP 5.6.20 or higher.
 
 ### Quickstart
 

vendor/htmlburger/carbon-fields/bin/webpack.blocks.js

@@ -1,7 +1,7 @@
 /**
  * External dependencies.
  */
-const merge = require( 'webpack-merge' );
+const { merge } = require( 'webpack-merge' );
 
 /**
  * Internal dependencies.

vendor/htmlburger/carbon-fields/bin/webpack.core.js

@@ -2,7 +2,7 @@
  * External dependencies.
  */
 const webpack = require( 'webpack' );
-const merge = require( 'webpack-merge' );
+const { merge } = require( 'webpack-merge' );
 
 /**
  * Internal dependencies.

vendor/htmlburger/carbon-fields/bin/webpack.metaboxes.js

@@ -2,7 +2,7 @@
  * External dependencies.
  */
 const webpack = require( 'webpack' );
-const merge = require( 'webpack-merge' );
+const { merge } = require( 'webpack-merge' );
 
 /**
  * Internal dependencies.

vendor/htmlburger/carbon-fields/bin/webpack.vendor.js

@@ -2,7 +2,7 @@
  * External dependencies.
  */
 const webpack = require( 'webpack' );
-const merge = require( 'webpack-merge' );
+const { merge } = require( 'webpack-merge' );
 
 /**
  * Internal dependencies.