Add pear modules, mail and net_smtp via composer (#93)

Add pear modules, mail and net_smtp via composer, remove php 5.6 build due to phpunit 6

lib/composer/vendor/myclabs/deep-copy/composer.json

@@ -3,19 +3,33 @@
     "type": "library",
     "description": "Create deep copies (clones) of your objects",
     "keywords": ["clone", "copy", "duplicate", "object", "object graph"],
-    "homepage": "https://github.com/myclabs/DeepCopy",
     "license": "MIT",
+
     "autoload": {
-        "psr-4": { "DeepCopy\\": "src/DeepCopy/" }
+        "psr-4": {
+            "DeepCopy\\": "src/DeepCopy/"
+        },
+        "files": [
+            "src/DeepCopy/deep_copy.php"
+        ]
     },
     "autoload-dev": {
-        "psr-4": { "DeepCopyTest\\": "tests/DeepCopyTest/" }
+        "psr-4": {
+            "DeepCopy\\": "fixtures/",
+            "DeepCopyTest\\": "tests/DeepCopyTest/"
+        }
     },
+
     "require": {
-        "php": ">=5.4.0"
+        "php": "^5.6 || ^7.0"
     },
     "require-dev": {
-        "doctrine/collections": "1.*",
-        "phpunit/phpunit": "~4.1"
+        "doctrine/collections": "^1.0",
+        "doctrine/common": "^2.6",
+        "phpunit/phpunit": "^4.1"
+    },
+
+    "config": {
+        "sort-packages": true
     }
 }