Update common files

.editorconfig

@@ -0,0 +1,30 @@
+; top-most EditorConfig file
+root = true
+
+; Unix-style newlines
+[*]
+end_of_line = LF
+
+[*.php]
+indent_style = space
+indent_size = 4
+
+[*.js]
+indent_style = space
+indent_size = 4
+
+[*.rst]
+indent_style = space
+indent_size = 4
+
+[*.md]
+indent_style = space
+indent_size = 4
+
+[*.yml]
+indent_style = space
+indent_size = 4
+
+[*.xml]
+indent_style = space
+indent_size = 4

.gitattributes

@@ -1,4 +1,15 @@
 * text=auto
 
 # Always use LF
-core.autocrlf=lf
+core.autocrlf=lf
+
+.editorconfig
+.gitattributes export-ignore
+.gitignore export-ignore
+.php_cs export-ignore
+.scrutinizer.yml export-ignore
+.styleci.yml export-ignore
+.travis.yml export-ignore
+.github export-ignore
+phpunit.xml.dist export-ignore
+/tests export-ignore

.gitignore

@@ -1,4 +1,5 @@
-phpunit.xml
-composer.lock
-composer.phar
-/vendor
+/phpunit.xml
+/composer.lock
+*.phar
+/vendor/
+/.php_cs.cache

.scrutinizer.yml

@@ -0,0 +1,26 @@
+filter:
+    paths: [ 'src/*' ]
+
+checks:
+    php:
+        code_rating: true
+        duplication: false
+        verify_property_names: true
+        uppercase_constants: true
+        remove_extra_empty_lines: true
+        properties_in_camelcaps: true
+        parameters_in_camelcaps: true
+        overriding_parameter: true
+        optional_parameters_at_the_end: true
+        function_in_camel_caps: true
+        encourage_single_quotes: true
+        classes_in_camel_caps: true
+        check_method_contracts:
+            verify_interface_like_constraints: true
+            verify_documented_constraints: true
+            verify_parent_constraints: true
+        avoid_perl_style_comments: true
+        avoid_usage_of_logical_operators: true
+        no_exit: false
+        no_unnecessary_final_modifier: false
+        overriding_private_members: false