Bump minimum version to 8.7.0 (#488)

Author: webflo

.travis.yml

@@ -30,7 +30,7 @@ install:
 
 script:
  - if [[ $RELEASE = dev ]]; then composer --verbose remove --no-update drupal/console; fi;
- - if [[ $RELEASE = dev ]]; then composer --verbose require --no-update drupal/core:8.7.x-dev webflo/drupal-core-require-dev:8.7.x-dev; fi;
+ - if [[ $RELEASE = dev ]]; then composer --verbose require --no-update drupal/core:8.8.x-dev webflo/drupal-core-require-dev:8.8.x-dev; fi;
  - if [[ $RELEASE = dev ]]; then composer --verbose update; fi;
  - cd $TRAVIS_BUILD_DIR/web
  - ./../vendor/bin/drush site-install --verbose --yes --db-url=sqlite://tmp/site.sqlite

composer.json

@@ -21,15 +21,15 @@
  "cweagans/composer-patches": "^1.6.5",
  "drupal-composer/drupal-scaffold": "^2.5",
  "drupal/console": "^1.0.2",
- "drupal/core": "^8.6.0",
+ "drupal/core": "^8.7.0",
  "drush/drush": "^9.0.0",
  "vlucas/phpdotenv": "^2.4",
  "webflo/drupal-finder": "^1.0.0",
  "webmozart/path-util": "^2.3",
  "zaporylie/composer-drupal-optimizations": "^1.0"
  },
  "require-dev": {
- "webflo/drupal-core-require-dev": "^8.6.0"
+ "webflo/drupal-core-require-dev": "^8.7.0"
  },
  "conflict": {
  "drupal/drupal": "*"