Reworked support for processing

demo/main/processors/scream.js

@@ -0,0 +1,18 @@
+export const name = "Scream";
+export function process(binding, opts) {
+  const modifiedEntries = binding.entries.map(entry => {
+    if (binding.markdownKey in entry.data) {
+      entry.data = {
+        ...entry.data,
+        [binding.markdownKey]: entry.data[binding.markdownKey].toUpperCase()
+      }
+    }
+
+    return entry;
+  });
+
+  return {
+    ...binding,
+    entries: modifiedEntries
+  };
+}