Drop old php versions (#17)

* Update PHP version

* Try fixing libonig5 related error when testing 8.2 PHP version

* Checking PHP version in travis

* Do not allow job failures

Fix #15

.travis.yml

@@ -1,21 +1,17 @@
 language: php
 jobs:
-    allow_failures:
-        - php: 8.2
     include:
-        - php: 7.1
-          dist: xenial
-        - php: 7.2
-          dist: xenial
-        - php: 7.3
-          dist: xenial
         - php: 7.4
           dist: focal
         - php: 8.0
           dist: focal
         - php: 8.1
           dist: focal
         - php: 8.2
-          dist: jammy
-install: composer install
+          dist: focal
+install:
+  - sudo apt-get update
+  - sudo apt-get install libonig5
+  - composer install
+  - php -v
 script: ./vendor/bin/phpunit tests

README.md

@@ -58,7 +58,7 @@ plus its curl and json extensions. See below the `require` section of project's
 ```json
 {
     "require": {
-        "php": ">=7.1",
+        "php": ">=7.4",
         "ext-curl": "*",
         "ext-json": "*"
     }

composer.json

@@ -5,7 +5,7 @@
     "keywords": ["pushover", "pushover.net", "wrapper", "client"],
     "homepage": "https://github.com/slunak/pushover-php",
     "require": {
-        "php": ">=7.1",
+        "php": ">=7.4",
         "ext-curl": "*",
         "ext-json": "*"
     },