feat: add composer deps, remove themeisle SDK

.gitignore

@@ -0,0 +1 @@
+/vendor/

composer.json

@@ -0,0 +1,19 @@
+{
+    "name": "michael/wp-super-page-cache",
+    "type": "project",
+    "require": {
+        "deliciousbrains/wp-background-processing": "1.0.2"
+    },
+    "license": "GPLv3",
+    "autoload": {
+        "psr-4": {
+            "Michael\\WpSuperPageCache\\": "src/"
+        }
+    },
+    "authors": [
+        {
+            "name": "Michael Thomas",
+            "email": "michaelhthomas@outlook.com"
+        }
+    ]
+}

composer.lock

@@ -0,0 +1,62 @@
+{
+    "_readme": [
+        "This file locks the dependencies of your project to a known state",
+        "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#installing-dependencies",
+        "This file is @generated automatically"
+    ],
+    "content-hash": "50ef1dc3bce1be2db423a7400f522901",
+    "packages": [
+        {
+            "name": "deliciousbrains/wp-background-processing",
+            "version": "1.0.2",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/deliciousbrains/wp-background-processing.git",
+                "reference": "2cbee1abd1b49e1133cd8f611df4d4fc5a8b9800"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/deliciousbrains/wp-background-processing/zipball/2cbee1abd1b49e1133cd8f611df4d4fc5a8b9800",
+                "reference": "2cbee1abd1b49e1133cd8f611df4d4fc5a8b9800",
+                "shasum": ""
+            },
+            "require": {
+                "php": ">=5.2"
+            },
+            "suggest": {
+                "coenjacobs/mozart": "Easily wrap this library with your own prefix, to prevent collisions when multiple plugins use this library"
+            },
+            "type": "library",
+            "autoload": {
+                "classmap": [
+                    "classes/"
+                ]
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "GPL-2.0-or-later"
+            ],
+            "authors": [
+                {
+                    "name": "Delicious Brains",
+                    "email": "nom@deliciousbrains.com"
+                }
+            ],
+            "description": "WP Background Processing can be used to fire off non-blocking asynchronous requests or as a background processing tool, allowing you to queue tasks.",
+            "support": {
+                "issues": "https://github.com/deliciousbrains/wp-background-processing/issues",
+                "source": "https://github.com/deliciousbrains/wp-background-processing/tree/master"
+            },
+            "time": "2020-07-31T07:00:11+00:00"
+        }
+    ],
+    "packages-dev": [],
+    "aliases": [],
+    "minimum-stability": "stable",
+    "stability-flags": [],
+    "prefer-stable": false,
+    "prefer-lowest": false,
+    "platform": [],
+    "platform-dev": [],
+    "plugin-api-version": "2.6.0"
+}