Cannot switch active unicode version in demo

[Tyriar]

Right now when the unicode11 addon is activated the version remains at 6. Instead of adding UI it might be better to set term.unicode.activeVersion = '11' automatically

[anirudh1713]

@Tyriar Can I take this on? if so, this will reuqire changing activeVersion in initAddons function and in the change listener for checkbox. is that correct?

xterm.js/demo/client.ts

Lines 370 to 396 in b5df612

	function initAddons(term: TerminalType): void {
	const fragment = document.createDocumentFragment();
	Object.keys(addons).forEach((name: AddonType) => {
	const addon = addons[name];
	const checkbox = document.createElement('input') as HTMLInputElement;
	checkbox.type = 'checkbox';
	checkbox.checked = !!addon.instance;
	if (!addon.canChange) {
	checkbox.disabled = true;
	}
	addDomListener(checkbox, 'change', () => {
	if (checkbox.checked) {
	addon.instance = new addon.ctor();
	term.loadAddon(addon.instance);
	if (name === 'webgl') {
	setTimeout(() => {
	document.body.appendChild((addon.instance as WebglAddon).textureAtlas);
	}, 0);
	}
	} else {
	if (name === 'webgl') {
	document.body.removeChild((addon.instance as WebglAddon).textureAtlas);
	}
	addon.instance!.dispose();
	addon.instance = undefined;
	}
	});

[Tyriar]

@anirudh1713 pretty much yeah, thank would be good 👍