travis config updated

Author: saqueib

.travis.yml

@@ -1,26 +1,14 @@
 language: php
 
-matrix:
- include:
- - 5.6
- - 7.0
- - 7.1
- - 7.2
- - 7.3
- fast_finish: true
- allow_failures:
- - php: 7.3
-
-cache:
- directories:
- - $HOME/.composer/cache
-
-before_install:
- - phpenv config-rm xdebug.ini || return 0
- - travis_retry composer self-update
+php:
+ - 5.6
+ - 7.0
+ - 7.1
+ - 7.2
 
 before_script:
- - travis_retry composer install --no-interaction --no-suggest
+ - travis_retry composer self-update
+ - travis_retry composer install
 
 script: vendor/bin/phpunit --verbose