Add travis and scrutinizer configs and update dependencies.

Author: noplanman

.scrutinizer.yml

@@ -0,0 +1,18 @@
+filter:
+    paths: [src/*]
+
+checks:
+    php:
+        remove_extra_empty_lines: true
+        remove_php_closing_tag: true
+        remove_trailing_whitespace: true
+        fix_use_statements:
+            remove_unused: true
+            preserve_multiple: false
+            preserve_blanklines: true
+            order_alphabetically: true
+        fix_php_opening_tag: true
+        fix_linefeed: true
+        fix_line_ending: true
+        fix_identation_4spaces: true
+        fix_doc_comments: true

.travis.yml

@@ -0,0 +1,32 @@
+dist: xenial
+sudo: required
+language: php
+
+cache:
+  directories:
+    - "$HOME/.composer/cache"
+
+php:
+  - 7.0
+  - 7.1
+  - nightly
+  - hhvm
+
+matrix:
+  allow_failures:
+    - php: nightly
+    - php: hhvm
+  fast_finish: true
+
+git:
+  depth: 1
+
+install:
+  - travis_retry composer install --prefer-dist --no-interaction
+
+script:
+  - composer check-code
+  - if [ "$TRAVIS_PHP_VERSION" == "7.1" ]; then composer test-cov; else composer test; fi
+
+after_script:
+  - if [ "$TRAVIS_PHP_VERSION" == "7.1" ]; then composer test-cov-upload; fi

composer.json

@@ -28,8 +28,8 @@
     },
     "require-dev": {
         "jakub-onderka/php-parallel-lint": "^0.9.2",
-        "phpunit/phpunit": "^6.1",
-        "squizlabs/php_codesniffer": "^2.9"
+        "phpunit/phpunit": "^6.3",
+        "squizlabs/php_codesniffer": "^3.0"
     },
     "autoload": {
         "psr-4": {