update php dependecies

Author: peengle

composer.json

@@ -4,10 +4,12 @@
     "keywords": ["phpdoc", "markdown"],
     "type": "library",
     "license": "MIT",
+    "minimum-stability": "dev",
+    "prefer-stable" : true,
     "require": {
         "phpdocumentor/reflection-docblock": "^3.0.2|^4.0",
         "clean/view": "0.1.0",
-        "clean/phpatlas": "dev-master"
+        "clean/phpatlas": "0.1.0"
     },
     "require-dev": {
         "phpunit/phpunit": "<6",