Add require entry for IMAP extension

DivineOmega · DivineOmega · commit 6dc28d4a629f · 2018-09-12T11:23:00.000+01:00
diff --git a/composer.json b/composer.json
@@ -9,7 +9,9 @@
             "email": "jordan@hall05.co.uk"
         }
     ],
-    "require": {},
+    "require": {
+        "ext-imap": "*"
+    },
     "autoload": {
         "psr-4": {
             "DivineOmega\\EmailStructureParser\\": "src/"
