Go back to WP 4.4 now that I've figured out Composer

.travis.yml

@@ -24,7 +24,7 @@ matrix:
     - php: 7.2
       env: WP_VERSION=latest
     - php: 7.2
-      env: WP_VERSION=4.9.8
+      env: WP_VERSION=4.4
     - php: 7.2
       env: WP_VERSION=trunk
     - php: 7.2
@@ -36,8 +36,8 @@ before_script:
   - |
     if [[ ! -z "$WP_VERSION" ]] ; then
       bash bin/install-wp-tests.sh wordpress_test root '' localhost $WP_VERSION
-      if [[ "$TRAVIS_PHP_VERSION" == "7.3" ]] ; then
-        composer require --dev phpunit/phpunit ^7
+      if [[ "$WP_VERSION" == "4.4" ]] ; then
+        composer require --dev --update-with-all-dependencies phpunit/phpunit ^6
       fi
     fi
 

README.md

@@ -1,7 +1,7 @@
 # WP SAML Auth #
 **Contributors:** getpantheon, danielbachhuber, Outlandish Josh  
 **Tags:** authentication, SAML  
-**Requires at least:** 4.9  
+**Requires at least:** 4.4  
 **Tested up to:** 5.2  
 **Stable tag:** 0.5.2  
 **License:** GPLv2 or later  

composer.json

@@ -22,7 +22,7 @@
         "pantheon-systems/pantheon-wordpress-upstream-tests": "dev-master",
         "wp-coding-standards/wpcs": "^2.1",
         "dealerdirect/phpcodesniffer-composer-installer": "^0.5.0",
-        "phpunit/phpunit": "^6"
+        "phpunit/phpunit": "^7"
     },
     "scripts": {
         "lint": "@phpcs",