It's been awhile since we have supported IE11 so it should be safe to remove
IntersectionObserver now.
From a TODO task in this repo:
> drop when we eventually drop IE11
Announcement of when we removed IE11 support:
https://meta.discourse.org/t/137984/40?u=blake
This moves the library into our lib folder, and refactored it to more
modern Javascript. I've kept the MIT license at the top of the file.
Doing this allows us to import it as a library in Ember CLI and ditch
yet another global variable.
* DEV: Move toHumanSize patch into I18n proper
The patch wasn't loaded in Ember CLI environment causing translation discrepancies.
* DEV: Remove String.prototype.i18n
I don't think this patch is needed. Let the CI prove me wrong. :P
This helps us out in a few ways:
1. It lessens our reliance on jQuery
2. It's slightly less code because it omits options we don't use
3. It is one less library to import and put into ES6 modules
This new iteration of select-kit focuses on following best principales and disallowing mutations inside select-kit components. A best effort has been made to avoid breaking changes, however if you content was a flat array, eg: ["foo", "bar"] You will need to set valueProperty=null and nameProperty=null on the component.
Also almost every component should have an `onChange` handler now to decide what to do with the updated data. **select-kit will not mutate your data by itself anymore**
* UX: make composer resize work on touch devices
This also replaces a vendor dependency with a small built-in resize mechanism.
* Make blue bar's larger padding specific to touch devices
This feature is used for defer loading of images and in future for post cloaking
This gives us a polyfill so we can safely use the feature in problem browsers
The polyfill supports "polling" but it does not appear we need it yet.
If we discover anything odd here, consider setting poll interval per:
https://github.com/w3c/IntersectionObserver/tree/master/polyfill
```
var io = new IntersectionObserver(callback);
io.POLL_INTERVAL = 100; // Time in milliseconds.
```
Keeping the mutation observer cause we often mutate the DOM
