diff --git a/.idea/modules.xml b/.idea/modules.xml
new file mode 100644
index 0000000..3d877a2
--- /dev/null
+++ b/.idea/modules.xml
@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="ProjectModuleManager">
+    <modules>
+      <module fileurl="file://$PROJECT_DIR$/.idea/nulib-base.iml" filepath="$PROJECT_DIR$/.idea/nulib-base.iml" />
+    </modules>
+  </component>
+</project>
\ No newline at end of file
diff --git a/.idea/nulib-base.iml b/.idea/nulib-base.iml
new file mode 100644
index 0000000..c88c3c8
--- /dev/null
+++ b/.idea/nulib-base.iml
@@ -0,0 +1,12 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<module type="WEB_MODULE" version="4">
+  <component name="NewModuleRootManager">
+    <content url="file://$MODULE_DIR$">
+      <sourceFolder url="file://$MODULE_DIR$/php/src" isTestSource="false" packagePrefix="nulib\" />
+      <sourceFolder url="file://$MODULE_DIR$/php/tests" isTestSource="true" packagePrefix="nulib\" />
+      <excludeFolder url="file://$MODULE_DIR$/php/vendor" />
+    </content>
+    <orderEntry type="inheritedJdk" />
+    <orderEntry type="sourceFolder" forTests="false" />
+  </component>
+</module>
\ No newline at end of file
diff --git a/.idea/php.xml b/.idea/php.xml
index f6159c8..aced70d 100644
--- a/.idea/php.xml
+++ b/.idea/php.xml
@@ -1,4 +1,64 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project version="4">
-  <component name="PhpProjectSharedConfiguration" php_language_level="7.3" />
+  <component name="MessDetectorOptionsConfiguration">
+    <option name="transferred" value="true" />
+  </component>
+  <component name="PHPCSFixerOptionsConfiguration">
+    <option name="transferred" value="true" />
+  </component>
+  <component name="PHPCodeSnifferOptionsConfiguration">
+    <option name="highlightLevel" value="WARNING" />
+    <option name="transferred" value="true" />
+  </component>
+  <component name="PhpIncludePathManager">
+    <include_path>
+      <path value="$PROJECT_DIR$/php/vendor/symfony/polyfill-ctype" />
+      <path value="$PROJECT_DIR$/php/vendor/theseer/tokenizer" />
+      <path value="$PROJECT_DIR$/php/vendor/symfony/deprecation-contracts" />
+      <path value="$PROJECT_DIR$/php/vendor/symfony/yaml" />
+      <path value="$PROJECT_DIR$/php/vendor/phpunit/php-text-template" />
+      <path value="$PROJECT_DIR$/php/vendor/phpunit/php-file-iterator" />
+      <path value="$PROJECT_DIR$/php/vendor/phpunit/php-timer" />
+      <path value="$PROJECT_DIR$/php/vendor/phpunit/php-code-coverage" />
+      <path value="$PROJECT_DIR$/php/vendor/sebastian/type" />
+      <path value="$PROJECT_DIR$/php/vendor/sebastian/object-enumerator" />
+      <path value="$PROJECT_DIR$/php/vendor/sebastian/version" />
+      <path value="$PROJECT_DIR$/php/vendor/sebastian/global-state" />
+      <path value="$PROJECT_DIR$/php/vendor/sebastian/complexity" />
+      <path value="$PROJECT_DIR$/php/vendor/sebastian/environment" />
+      <path value="$PROJECT_DIR$/php/vendor/sebastian/recursion-context" />
+      <path value="$PROJECT_DIR$/php/vendor/sebastian/resource-operations" />
+      <path value="$PROJECT_DIR$/php/vendor/sebastian/diff" />
+      <path value="$PROJECT_DIR$/php/vendor/sebastian/cli-parser" />
+      <path value="$PROJECT_DIR$/php/vendor/doctrine/instantiator" />
+      <path value="$PROJECT_DIR$/php/vendor/sebastian/comparator" />
+      <path value="$PROJECT_DIR$/php/vendor/sebastian/lines-of-code" />
+      <path value="$PROJECT_DIR$/php/vendor/sebastian/code-unit-reverse-lookup" />
+      <path value="$PROJECT_DIR$/php/vendor/sebastian/code-unit" />
+      <path value="$PROJECT_DIR$/php/vendor/sebastian/object-reflector" />
+      <path value="$PROJECT_DIR$/php/vendor/sebastian/exporter" />
+      <path value="$PROJECT_DIR$/php/vendor/phpunit/phpunit" />
+      <path value="$PROJECT_DIR$/php/vendor/phpunit/php-invoker" />
+      <path value="$PROJECT_DIR$/php/vendor/phar-io/version" />
+      <path value="$PROJECT_DIR$/php/vendor/phar-io/manifest" />
+      <path value="$PROJECT_DIR$/php/vendor/nulib/tests" />
+      <path value="$PROJECT_DIR$/php/vendor/myclabs/deep-copy" />
+      <path value="$PROJECT_DIR$/php/vendor/nikic/php-parser" />
+      <path value="$PROJECT_DIR$/php/vendor/composer" />
+    </include_path>
+  </component>
+  <component name="PhpProjectSharedConfiguration" php_language_level="7.4">
+    <option name="suggestChangeDefaultLanguageLevel" value="false" />
+  </component>
+  <component name="PhpStanOptionsConfiguration">
+    <option name="transferred" value="true" />
+  </component>
+  <component name="PhpUnit">
+    <phpunit_settings>
+      <PhpUnitSettings configuration_file_path="$PROJECT_DIR$/php/vendor/sebastian/object-enumerator/phpunit.xml" custom_loader_path="$PROJECT_DIR$/vendor/autoload.php" use_configuration_file="true" />
+    </phpunit_settings>
+  </component>
+  <component name="PsalmOptionsConfiguration">
+    <option name="transferred" value="true" />
+  </component>
 </project>
\ No newline at end of file
diff --git a/.idea/vcs.xml b/.idea/vcs.xml
new file mode 100644
index 0000000..35eb1dd
--- /dev/null
+++ b/.idea/vcs.xml
@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="VcsDirectoryMappings">
+    <mapping directory="" vcs="Git" />
+  </component>
+</project>
\ No newline at end of file