feat: vendorize

.editorconfig

@@ -0,0 +1,21 @@
+# For more information about the properties used in this file,
+# please see the EditorConfig documentation:
+# http://editorconfig.org
+
+[*]
+charset = utf-8
+end_of_line = lf
+indent_size = 4
+indent_style = space
+insert_final_newline = true
+trim_trailing_whitespace = true
+
+[*.{yml,js,json,css,scss,eslintrc}]
+indent_size = 2
+indent_style = space
+
+[composer.json]
+indent_size = 4
+
+# The indent size used in the package.json file cannot be changed:
+# https://github.com/npm/npm/pull/3180#issuecomment-16336516

README.md

@@ -2,11 +2,6 @@
 
 A library with common functionality used by SilverStripe template developers.
 
-Thi smodule is now SilverStripe 4 compatible  
-
-For a SilverStripe `3.*` compatible version see branch `0.2`.
-For a SilverStripe `2.4` compatible version see branch `0.1`.
-
 # Installation (with composer)
 
     $ composer require heyday/silverstripe-templatehelpers
@@ -29,4 +24,4 @@ The image path helper defaults to `themes/[theme]/images/`. The path within the
 TemplateHelpers:
   dev_images: source/images
   prod_images: production/images
-```
+```

composer.json

@@ -1,14 +1,13 @@
 {
-	"name": "heyday/silverstripe-templatehelpers",
-	"type": "silverstripe-module",
-	"description": "Simple template functionality for Silverstripe",
-	"authors": [
-		{
-			"name": "Stevie Mayhew",
-			"email": "[email protected]"
-		}
-	],
-	"require": {
-		"composer/installers": "~1.0"
-	}
+    "name": "heyday/silverstripe-templatehelpers",
+    "type": "silverstripe-vendormodule",
+    "description": "Simple template functionality for Silverstripe",
+    "require": {
+        "composer/installers": "~1.0"
+    },
+    "autoload": {
+        "psr-4": {
+            "Heyday\\TemplateHelpers\\": "src/"
+        }
+    },
 }

code/TemplateHelpers.php → src/TemplateHelpers.php

@@ -14,24 +14,24 @@
  */
 class TemplateHelpers implements TemplateGlobalProvider
 {
-    private static $casting = array(
+    private static $casting = [
         'MetaTags' => 'HTMLText',
         'addInlineScript' => 'HTMLText'
-    );
+    ];
 
     /**
      * @return array
      */
     public static function get_template_global_variables()
     {
-        return array(
+        return [
             'isDev',
             'isTest',
             'isLive',
             'addInlineScript',
             'ThemeDir',
             'ImagePath'
-        );
+        ];
     }
 
     /**