Huge restructure of the API.

Input chart def expansion now happens through a separately tested function.
Expansion happens on construction of the API object, this makes the job of the fluent API easier.

Author: ashleydavis

examples/package-lock.json

@@ -0,0 +1,18 @@
+{
+  "name": "examples",
+  "version": "1.0.0",
+  "description": "",
+  "main": "index.js",
+  "scripts": {
+    "test": "echo \"Error: no test specified\" && exit 1"
+  },
+  "keywords": [],
+  "author": "",
+  "license": "ISC",
+  "dependencies": {
+    "fs-extra": "^7.0.1"
+  },
+  "devDependencies": {
+    "@types/fs-extra": "^5.0.5"
+  }
+}