Update dependencies

- Drops support for PHP versions prior to 7.1.
- Updates to zend-expressive-template v2 series.
- Updates to zend-expressive-router v3 series.
- Updates to zend-expressive-helpers v5 series.
- Updates to PHPUnit 6.5 series.

Author: weierophinney

.travis.yml

@@ -13,46 +13,6 @@ env:
 
 matrix:
   include:
-    - php: 5.6
-      env:
-        - DEPS=lowest
-    - php: 5.6
-      env:
-        - DEPS=locked
-        - LEGACY_DEPS="phpunit/phpunit"
-    - php: 5.6
-      env:
-        - DEPS=locked
-        - LEGACY_DEPS="phpunit/phpunit"
-        - HELPER_DEPS="zendframework/zend-expressive-helpers:^2.2 zendframework/zend-expressive-router:^1.3.2"
-    - php: 5.6
-      env:
-        - DEPS=locked
-        - LEGACY_DEPS="phpunit/phpunit"
-        - HELPER_DEPS="zendframework/zend-expressive-helpers:^3.0.1"
-    - php: 5.6
-      env:
-        - DEPS=latest
-    - php: 7
-      env:
-        - DEPS=lowest
-    - php: 7
-      env:
-        - DEPS=locked
-        - LEGACY_DEPS="phpunit/phpunit"
-    - php: 7
-      env:
-        - DEPS=locked
-        - LEGACY_DEPS="phpunit/phpunit"
-        - HELPER_DEPS="zendframework/zend-expressive-helpers:^2.2 zendframework/zend-expressive-router:^1.3.2"
-    - php: 7
-      env:
-        - DEPS=locked
-        - LEGACY_DEPS="phpunit/phpunit"
-        - HELPER_DEPS="zendframework/zend-expressive-helpers:^3.0.1"
-    - php: 7
-      env:
-        - DEPS=latest
     - php: 7.1
       env:
         - DEPS=lowest
@@ -61,14 +21,6 @@ matrix:
         - DEPS=locked
         - CS_CHECK=true
         - TEST_COVERAGE=true
-    - php: 7.1
-      env:
-        - DEPS=locked
-        - HELPER_DEPS="zendframework/zend-expressive-helpers:^2.2 zendframework/zend-expressive-router:^1.3.2"
-    - php: 7.1
-      env:
-        - DEPS=locked
-        - HELPER_DEPS="zendframework/zend-expressive-helpers:^3.0.1"
     - php: 7.1
       env:
         - DEPS=latest
@@ -78,14 +30,6 @@ matrix:
     - php: 7.2
       env:
         - DEPS=locked
-    - php: 7.2
-      env:
-        - DEPS=locked
-        - HELPER_DEPS="zendframework/zend-expressive-helpers:^2.2 zendframework/zend-expressive-router:^1.3.2"
-    - php: 7.2
-      env:
-        - DEPS=locked
-        - HELPER_DEPS="zendframework/zend-expressive-helpers:^3.0.1"
     - php: 7.2
       env:
         - DEPS=latest
@@ -95,10 +39,8 @@ before_install:
 
 install:
   - travis_retry composer install $COMPOSER_ARGS --ignore-platform-reqs
-  - if [[ $LEGACY_DEPS != '' ]]; then travis_retry composer update $COMPOSER_ARGS --with-dependencies $LEGACY_DEPS ; fi
   - if [[ $DEPS == 'latest' ]]; then travis_retry composer update $COMPOSER_ARGS ; fi
   - if [[ $DEPS == 'lowest' ]]; then travis_retry composer update --prefer-lowest --prefer-stable $COMPOSER_ARGS ; fi
-  - if [[ $HELPER_DEPS != '' ]]; then travis_retry composer require $COMPOSER_ARGS --update-with-dependencies $HELPER_DEPS ; fi
   - if [[ $TEST_COVERAGE == 'true' ]]; then travis_retry composer require --dev $COMPOSER_ARGS $COVERAGE_DEPS ; fi
   - stty cols 120 && composer show
 

composer.json

@@ -20,19 +20,18 @@
         "forum": "https://discourse.zendframework.com/c/questions/expressive"
     },
     "require": {
-        "php": "^5.6 || ^7.0",
-        "container-interop/container-interop": "^1.2.0",
+        "php": "^7.1",
         "psr/container": "^1.0",
         "psr/http-message": "^1.0.1",
-        "zendframework/zend-expressive-helpers": "^1.4 || ^2.2 || ^3.0.1 || ^4.0",
-        "zendframework/zend-expressive-router": "^1.3.2 || ^2.1",
-        "zendframework/zend-expressive-template": "^1.0.4",
+        "zendframework/zend-expressive-helpers": "^5.0.0-dev",
+        "zendframework/zend-expressive-router": "^3.0.0-dev",
+        "zendframework/zend-expressive-template": "^2.0.0-dev",
         "zendframework/zend-servicemanager": "^2.7.8 || ^3.3",
         "zendframework/zend-view": "^2.8.1"
     },
     "require-dev": {
         "malukenho/docheader": "^0.1.5",
-        "phpunit/phpunit": "^5.7.23 || ^6.4.3",
+        "phpunit/phpunit": "^6.5.3",
         "zendframework/zend-coding-standard": "~1.0.0"
     },
     "conflict": {