add laravel 5.5 support

.travis.yml

@@ -1,11 +1,8 @@
 language: php
 
-php:
-    - '5.4'
-    - '5.5.9'
-    - '5.6'
-    - '7.0'
-    - 'nightly'
+cache:
+  directories:
+    - $HOME/.composer/cache
 
 env:
     - ILLUMINATE_VERSION=5.0.*
@@ -32,6 +29,8 @@ matrix:
           env: ILLUMINATE_VERSION=5.3.*
         - php: 7.0
           env: ILLUMINATE_VERSION=5.4.*
+        - php: 7.0
+          env: ILLUMINATE_VERSION=5.5.*
         - php: 7.1
           env: ILLUMINATE_VERSION=5.1.*
         - php: 7.1
@@ -40,6 +39,8 @@ matrix:
           env: ILLUMINATE_VERSION=5.3.*
         - php: 7.1
           env: ILLUMINATE_VERSION=5.4.*
+        - php: 7.1
+          env: ILLUMINATE_VERSION=5.5.*
         - php: nightly
           env: ILLUMINATE_VERSION=5.1.*
         - php: nightly
@@ -48,6 +49,8 @@ matrix:
           env: ILLUMINATE_VERSION=5.3.*
         - php: nightly
           env: ILLUMINATE_VERSION=5.4.*
+        - php: nightly
+          env: ILLUMINATE_VERSION=5.5.*
 
 before_install:
     - composer require "illuminate/database:${ILLUMINATE_VERSION}" --no-update -v

README.md

@@ -1,5 +1,5 @@
 # Cascading soft deletes for the Laravel PHP Framework
-## v1.2.1
+## v1.3.0
 
 ![Travis Build Status](https://travis-ci.org/michaeldyrynda/laravel-cascade-soft-deletes.svg?branch=master)
 [![Scrutinizer Code Quality](https://scrutinizer-ci.com/g/michaeldyrynda/laravel-cascade-soft-deletes/badges/quality-score.png?b=master)](https://scrutinizer-ci.com/g/michaeldyrynda/laravel-cascade-soft-deletes/?branch=master)
@@ -28,6 +28,8 @@ As of `v1.0.5`, the package has better support of `hasOne` relationships ([#10](
 
 `v1.2.0` adds compatibility with Laravel 5.4.
 
+`v1.3.0` adds compatibility with Laravel 5.5.
+
 ## Code Samples
 
 ```php