Drop php-5.6, let package require 7.0 at least

Author: peter279k

.travis.yml

@@ -1,10 +1,10 @@
 language: php
 
 php:
-  - 5.6
   - 7.0
   - 7.1
   - 7.2
+  - 7.3
 
 before_script:
   - printf "\n" | pecl install imagick
@@ -19,4 +19,4 @@ after_script:
 - php vendor/bin/coveralls -v
 
 after_success:
-  - sh -c 'if [ "$TRAVIS_PHP_VERSION" != "hhvm" ]; then php vendor/bin/coveralls -v; fi;'
+  - sh -c 'if [ "$TRAVIS_PHP_VERSION" != "hhvm" ]; then php vendor/bin/coveralls -v; fi;'

composer.json

@@ -15,15 +15,15 @@
 		}
 	],
 	"require": {
-		"php": "^5.6|^7.0|^7.1|^7.2|^7.3",
+		"php": "^7.0|^7.1|^7.2|^7.3",
 		"ext-json": "*",
 		"intervention/image": "^2.3",
 		"lasserafn/php-initials": "^2.20",
 		"lasserafn/php-string-script-language": "^0.1.0"
 	},
 	"require-dev": {
 		"doctrine/instantiator": "1.0.*",
-		"phpunit/phpunit": "~5.6",
+		"phpunit/phpunit": "^6.5",
 		"satooshi/php-coveralls": "^1.0"
 	},
 	"autoload": {
@@ -39,7 +39,7 @@
 	"config": {
 		"sort-packages": true,
 		"platform": {
-			"php": "5.6"
+			"php": "7.0"
 		}
 	}
 }