add char support (#206)

* add char support

* add char test

* remove __wbindgen_char fns

* re-order travis script

* update serve script

* remove binds to unused char functions

* add more wide character items to chars list

* remove unused code

* add char to readme

* remove built file

examples/char/index.js

@@ -0,0 +1,73 @@
+import {chars} from './chars.js'
+let imp = import('./char.js')
+let mod;
+
+let counters = [];
+imp.then(wasm => {
+    mod = wasm;
+    addCounter();
+    let b = document.getElementById('add-counter');
+    if (!b) throw new Error('Unable to find #add-counter');
+    b.addEventListener('click', ev => addCounter())
+});
+
+function addCounter() {
+    let ctr = mod.Counter.new(randomChar(), 0);
+    counters.push(ctr);
+    update();
+}
+
+function update() {
+    let container = document.getElementById('container');
+    if (!container) throw new Error('Unable to find #container in dom');
+    while (container.hasChildNodes()) {
+        if (container.lastChild.id == "add-counter") break;
+        container.removeChild(container.lastChild);
+    }
+    for (var i = 0; i < counters.length; i++) {
+        let counter = counters[i];
+        container.appendChild(newCounter(counter.key(), counter.count(), ev => {
+            counter.increment();
+            update();
+        }))
+    }
+}
+
+function randomChar() {
+    console.log('randomChar');
+    let idx = Math.floor(Math.random() * (chars.length - 1));
+    console.log('index', idx);
+    let ret = chars.splice(idx, 1)[0];
+    console.log('char', ret);
+    return ret;
+}
+
+function newCounter(key, value, cb) {
+    let container = document.createElement('div');
+    container.setAttribute('class', 'counter');
+    let title = document.createElement('h1');
+    title.appendChild(document.createTextNode('Counter ' + key));
+    container.appendChild(title);
+    container.appendChild(newField('Count', value));
+    let plus = document.createElement('button');
+    plus.setAttribute('type', 'button');
+    plus.setAttribute('class', 'plus-button');
+    plus.appendChild(document.createTextNode('+'));
+    plus.addEventListener('click', cb);
+    container.appendChild(plus);
+    return container;
+}
+
+function newField(key, value) {
+    let ret = document.createElement('div');
+    ret.setAttribute('class', 'field');
+    let name = document.createElement('span');
+    name.setAttribute('class', 'name');
+    name.appendChild(document.createTextNode(key));
+    ret.appendChild(name);
+    let val = document.createElement('span');
+    val.setAttribute('class', 'value');
+    val.appendChild(document.createTextNode(value));
+    ret.appendChild(val);
+    return ret;
+}