Updates dependencies

Drop support for php 5.
Upgrade other phpdocumentor libraries to their latest versions.

Author: jaapio

.travis.yml

@@ -3,14 +3,10 @@ language: php
 sudo: false
 
 php:
-  - 5.5
-  - 5.6
   - 7.0
-  - hhvm
-
-matrix:
-    allow_failures:
-        - php: hhvm
+  - 7.1
+  - 7.2
+  - nightly
 
 cache:
   directories:

composer.json

@@ -19,17 +19,17 @@
         }
     },
     "require": {
-        "php":                               ">=5.4.0",
+        "php":                               "^7.0",
         "psr/log":                           "~1.0",
         "nikic/php-parser":                  "^2.0",
-        "phpdocumentor/reflection-docblock": "^3.0@dev",
+        "phpdocumentor/reflection-docblock": "4.1.0 as 3.3.0",
         "phpdocumentor/reflection-common":   "^1.0@dev"
     },
     "require-dev": {
-        "phpunit/phpunit":    "~4.0",
         "mockery/mockery":    "~0.8",
         "mikey179/vfsStream": "~1.2",
-        "squizlabs/php_codesniffer": "^2.5"
+        "squizlabs/php_codesniffer": "^2.5",
+        "phpunit/phpunit": "^5.0"
     },
     "extra": {
         "branch-alias": {