unrestrict class changes and inline module requirements

[adardesign]

Currently, the default snippet must be inline and the head with <script type="module">

We should also allow it to be used to be called whenever, so we can get it for stats purposes
With this option, the window.obs will have its properties defined by evaluating on demand (time of script running)

[csswizardry]

I explain why this has to be the case pretty firmly:

Obs.js must be placed early in the as an inline <script>, much like Google Tag Manager. Any attempt to install Obs.js any other way—via a package manager, as an external file—will cause Obs.js to self-terminate.

In order for Obs.js to provide its key function, it needs to run before any other HTML, CSS, or JS that might depend on it. Thus, Obs.js must be installed early and synchronously…

But are you saying it would be beneficial to remove these restrictions for developers who don’t want to adapt their pages, but just use Obs.js as an analytics addon?