diff --git a/.gitignore b/.gitignore
index 32605eb..8c1d8ea 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,8 +1,7 @@
 vendor
 composer.lock
 coverage_report
-.idea/*.iws
-.idea/workspace.xml
-.idea/tasks.xml
+.idea/*
+!.idea/runConfigurations/
 .DS_Store
 live_phpunit.sh
diff --git a/.idea/.name b/.idea/.name
deleted file mode 100644
index 12940c6..0000000
--- a/.idea/.name
+++ /dev/null
@@ -1 +0,0 @@
-shipping
\ No newline at end of file
diff --git a/.idea/encodings.xml b/.idea/encodings.xml
deleted file mode 100644
index e206d70..0000000
--- a/.idea/encodings.xml
+++ /dev/null
@@ -1,5 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<project version="4">
-  <component name="Encoding" useUTFGuessing="true" native2AsciiForPropertiesFiles="false" />
-</project>
-
diff --git a/.idea/inspectionProfiles/Project_Default.xml b/.idea/inspectionProfiles/Project_Default.xml
deleted file mode 100644
index 59f68b5..0000000
--- a/.idea/inspectionProfiles/Project_Default.xml
+++ /dev/null
@@ -1,10 +0,0 @@
-<component name="InspectionProjectProfileManager">
-  <profile version="1.0" is_locked="false">
-    <option name="myName" value="Project Default" />
-    <option name="myLocal" value="false" />
-    <inspection_tool class="PhpCSValidationInspection" enabled="true" level="ERROR" enabled_by_default="true">
-      <option name="CODING_STANDARD" value="PSR2" />
-      <option name="WARNING_HIGHLIGHT_LEVEL_NAME" value="ERROR" />
-    </inspection_tool>
-  </profile>
-</component>
\ No newline at end of file
diff --git a/.idea/inspectionProfiles/profiles_settings.xml b/.idea/inspectionProfiles/profiles_settings.xml
deleted file mode 100644
index 3b31283..0000000
--- a/.idea/inspectionProfiles/profiles_settings.xml
+++ /dev/null
@@ -1,7 +0,0 @@
-<component name="InspectionProjectProfileManager">
-  <settings>
-    <option name="PROJECT_PROFILE" value="Project Default" />
-    <option name="USE_PROJECT_PROFILE" value="true" />
-    <version value="1.0" />
-  </settings>
-</component>
\ No newline at end of file
diff --git a/.idea/misc.xml b/.idea/misc.xml
deleted file mode 100644
index 1162f43..0000000
--- a/.idea/misc.xml
+++ /dev/null
@@ -1,5 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<project version="4">
-  <component name="ProjectRootManager" version="2" />
-</project>
-
diff --git a/.idea/modules.xml b/.idea/modules.xml
deleted file mode 100644
index 7dc8243..0000000
--- a/.idea/modules.xml
+++ /dev/null
@@ -1,9 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<project version="4">
-  <component name="ProjectModuleManager">
-    <modules>
-      <module fileurl="file://$PROJECT_DIR$/.idea/shipping.iml" filepath="$PROJECT_DIR$/.idea/shipping.iml" />
-    </modules>
-  </component>
-</project>
-
diff --git a/.idea/php.xml b/.idea/php.xml
deleted file mode 100644
index 8ce43b9..0000000
--- a/.idea/php.xml
+++ /dev/null
@@ -1,9 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<project version="4">
-  <component name="PhpUnit">
-    <phpunit_settings>
-      <PhpUnitSettings load_method="CUSTOM_LOADER" custom_loader_path="$PROJECT_DIR$/vendor/autoload.php" phpunit_phar_path="" />
-    </phpunit_settings>
-  </component>
-</project>
-
diff --git a/.idea/scopes/scope_settings.xml b/.idea/scopes/scope_settings.xml
deleted file mode 100644
index 922003b..0000000
--- a/.idea/scopes/scope_settings.xml
+++ /dev/null
@@ -1,5 +0,0 @@
-<component name="DependencyValidationManager">
-  <state>
-    <option name="SKIP_IMPORT_STATEMENTS" value="false" />
-  </state>
-</component>
\ No newline at end of file
diff --git a/.idea/shipping.iml b/.idea/shipping.iml
deleted file mode 100644
index 7f11295..0000000
--- a/.idea/shipping.iml
+++ /dev/null
@@ -1,12 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<module type="WEB_MODULE" version="4">
-  <component name="NewModuleRootManager">
-    <content url="file://$MODULE_DIR$">
-      <sourceFolder url="file://$MODULE_DIR$/src" isTestSource="false" />
-      <sourceFolder url="file://$MODULE_DIR$/tests" isTestSource="true" />
-    </content>
-    <orderEntry type="inheritedJdk" />
-    <orderEntry type="sourceFolder" forTests="false" />
-  </component>
-</module>
-
diff --git a/.idea/vcs.xml b/.idea/vcs.xml
deleted file mode 100644
index c80f219..0000000
--- a/.idea/vcs.xml
+++ /dev/null
@@ -1,7 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<project version="4">
-  <component name="VcsDirectoryMappings">
-    <mapping directory="$PROJECT_DIR$" vcs="Git" />
-  </component>
-</project>
-
diff --git a/.travis.yml b/.travis.yml
index 5922d0e..55c7d7d 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,8 +1,5 @@
 language: php
 php:
-  - 5.4
-  - 5.5
-  - 5.6
   - 7.1
   - 7.2
   - 7.3
diff --git a/README.md b/README.md
index 600b368..97a52cc 100644
--- a/README.md
+++ b/README.md
@@ -24,7 +24,7 @@ Add the following lines to your ``composer.json`` file.
 ```JSON
 {
     "require": {
-        "pdt256/shipping": "1.0.*@dev"
+        "pdt256/shipping": "1.0.*"
     }
 }
 ```
diff --git a/composer.json b/composer.json
index 0e4024f..4d6d96a 100644
--- a/composer.json
+++ b/composer.json
@@ -11,7 +11,7 @@
     ],
     "extra": {
         "branch-alias": {
-            "dev-master": "1.0.x-dev"
+            "dev-master": "1.0.0"
         }
     },
     "require-dev": {
@@ -19,7 +19,7 @@
         "squizlabs/php_codesniffer": "3.5.*"
     },
     "require": {
-        "php": ">=5.4"
+        "php": ">=7.1"
     },
     "autoload": {
         "psr-4": {