split directory structure in doc, src and test

for better clarity and better autoloading by excluding tests
also with .gitattributes for optimized dist packages

Author: Tobion

.gitattributes

@@ -0,0 +1,8 @@
+/.travis export-ignore
+/tests export-ignore
+/.gitattributes export-ignore
+/.gitignore export-ignore
+/.php_cs.dist export-ignore
+/.scrutinizer.yml export-ignore
+/.travis.yml export-ignore
+/phpunit.xml.dist export-ignore

.travis.yml

@@ -43,7 +43,7 @@ install:
   - .travis/wait-for-elasticsearch.sh
 
 before_script:
-  - phpenv config-add travis.php.ini
+  - phpenv config-add .travis/php.ini
   - if [ "$TRAVIS_PHP_VERSION" = "5.6" ]; then echo "extension = mongo.so" >> ~/.phpenv/versions/$(phpenv version-name)/etc/php.ini; fi;
   - if [ "$TRAVIS_PHP_VERSION" = "5.6" ]; then composer require --dev --no-update doctrine/mongodb-odm=^1; fi;
   - if [ "$TRAVIS_PHP_VERSION" = "7.0" ]; then echo "extension = mongodb.so" >> ~/.phpenv/versions/$(phpenv version-name)/etc/php.ini; fi;

travis.php.ini renamed to .travis/php.ini

@@ -13,6 +13,7 @@ in 5.0 versions.
 * Fix undefined index when `ignore_missing` is active.
 * Dropped PHP 5.5 support.
 * Removed Symfony 2.7, 2.8, 3.0 and 3.1 support.
+* Added Symfony 4 support.
 * Made commands services and add support for lazy loading of them
 * Removed all `fos_elastica.*.class` parameters. Overwrite or decorate the service instead if you
    need to change the definition.