WebUI not working when using latest git head

[ttytm]

Calling C/C++ functions form JS does not work.

When trying to run the call_c_from_js/call_cpp_from_js examples, the functions should print their results to the terminal, but they do not.

Checking the browser console, the error is:

Uncaught ReferenceError: webui_fn is not defined
    at HTMLButtonElement.onclick ((index):22:58)

The examples work checking out version 2.3.0

git checkout tags/2.3.0

I think it's a high priority to fix this before releasing another version.

[ttytm]

It looks like it stopped working after #131

[hassandraga]

webui_fn() is now webui.call() suggested by @JOTSR . It's a break change. But it's a small deal as this is our only JS API.

Examples updated (3133bcb).
Website update (https://webui.me/docs/2.4.0/#/)