Fix php7 String class name issue in Mibew Messenger by patching justblackbird/handlebars.php-helpers

composer.json

{
  "name": "mibew/mibew",
  "version": "2.1.2",
  "description": "Mibew Messenger - open-source live support application",
  "type": "project",
  "homepage": "http://mibew.org",
  "license": "Apache-2.0",
  "authors": [
    {
      "name": "Mibew Messenger Project",
      "homepage": "http://mibew.org/credits"
    }
  ],
  "support": {
    "email": "support@mibew.org",
    "issues": "https://github.com/mibew/mibew/issues",
    "forum": "http://mibew.org/forums",
    "source": "https://github.com/mibew/mibew"
  },
  "require": {
    "cweagans/composer-patches": "1.5.0",
    "xamin/handlebars.php": "0.10.3",
    "justblackbird/handlebars.php-helpers": "~0.2.1",
    "symfony/http-foundation": "2.6.*",
    "symfony/routing": "2.6.*",
    "symfony/config": "2.6.*",
    "symfony/yaml": "2.6.*",
    "symfony/translation": "2.6.*",
    "tedivm/stash": "0.12.*",
    "canteen/html5": "1.1.*",
    "vierbergenlars/php-semver": "3.0.*",
    "swiftmailer/swiftmailer": "~5.4.0",
    "ua-parser/uap-php": "~3.4.1",
    "true/punycode": "~1.1"
  },
  "require-dev": {
    "squizlabs/php_codesniffer": "~2.3.3"
  },
  "config": {
    "vendor-dir": "mibew/vendor"
  },
  "scripts": {
    "post-install-cmd": [
      "sh ../scripts/composer/config.sh"
    ]
  },
  "extra": {
    "patches": {
      "justblackbird/handlebars.php-helpers": {
        "Fix php 7 issue of reserved class name String": "../patches/fix_php7_string_class_name.patch"
      }
    }
  }
}

fix_php7_string_class_name.patch

diff --git a/handlebars.php-helpers/src/Comparison/IfAnyHelper.php b/handlebars.php-helpers/src/Comparison/IfAnyHelper.php
index 56314ac..db00101 100644
--- a/handlebars.php-helpers/src/Comparison/IfAnyHelper.php
+++ b/handlebars.php-helpers/src/Comparison/IfAnyHelper.php
@@ -12,7 +12,7 @@ namespace JustBlackBird\HandlebarsHelpers\Comparison;
 
 use Handlebars\Context;
 use Handlebars\Helper as HelperInterface;
-use Handlebars\String;
+use Handlebars\StringWrapper;
 use Handlebars\Template;
 
 /**
@@ -48,8 +48,8 @@ class IfAnyHelper implements HelperInterface
         foreach ($parsed_args as $parsed_arg) {
             $value = $context->get($parsed_arg);
 
-            if ($value instanceof String) {
-                // Casting any object of \Handlebars\String will have false
+            if ($value instanceof StringWrapper) {
+                // Casting any object of \Handlebars\StringWrapper will have false
                 // positive result even for those with empty internal strings.
                 // Thus we need to check internal string of such objects.
                 $value = $value->getString();