Fixed a bug relating to custom-elements's first vnode where render(){ return <div class="example" /> } would set the example-class on the custom-element itself.

Added support for className and style similar to react
Cleaned up some comments
Reworked how tests are built in order to add a new test "pdf" which was a small side-project where previous mentioned bug showed up, it's an example using HTML to create a PDF for printing

tests/todos-mvc/components/todo-input.jsx

@@ -0,0 +1,35 @@
+import {defineElement, render, CustomElement, Host, State} from "../../../packages/csx";
+import style from './todo-input.scss';
+
+@defineElement('todo-input')
+export class TodoInput extends CustomElement{
+    @State() value = "";
+    
+    render(){
+        return (
+            <Host>
+                <style>{ style }</style>
+                <form onSubmit={ this.handleSubmit }>
+                    <input
+                        value={this.value}
+                        type="text"
+                        placeholder="What needs to be done?"
+                        onInput={this.handleInput}
+                    />
+                </form>
+            </Host>
+        )
+    }
+    
+    handleSubmit = (e)=>{
+        e.preventDefault();
+        if (!this.value) return;
+        this.dispatchEvent(new CustomEvent('submit', {
+            detail: this.value
+        }));
+        this.value = "";
+    };
+    handleInput = ({target: {value}})=>{
+        this.value = value;
+    };
+}