License: MIT
Signed-off-by: Alan Shaw <alan.shaw@protocol.ai>

License: MIT
Signed-off-by: Alan Shaw <alan.shaw@protocol.ai>

Too much greenkeeper noise and they are not critical to the project.

This PR enabled pubsub in the browser and paves the way for a switch to using `fetch` by default and allowing for cancelable requests via the use of `AbortController`.

It's mostly the work done in ipfs-shipyard/js-ipfs-http-client-lite#1 but adapted a bit for use here.

If approved, we can start work moving the other commands to use `fetch`. The work in https://github.com/ipfs-shipyard/js-ipfs-http-client-lite has proven the hard parts (uploading files) are all possible using the `fetch` API.

Since `fetch` is promise based, when moving the other commands it makes sense to just switch to async/await as per ipfs/js-ipfs#1670 (and callbackify instead of promisify).

Depends on:

* [x] ipfs-inactive/interface-js-ipfs-core#505

resolves #518
refs ipfs/js-ipfs#2093
resolves #932

License: MIT
Signed-off-by: Alan Shaw <alan.shaw@protocol.ai>

Test on Node.js 12 and also utilise cache.

License: MIT
Signed-off-by: Alan Shaw <alan.shaw@protocol.ai>

* chore(package): update buffer to version 5.4.0

* chore: update buffer dep

License: MIT
Signed-off-by: Alan Shaw <alan.shaw@protocol.ai>

Adds a method called `ipfs._addAsyncIterator`, prefixed with an
underscore to mark it as sort of unofficial (though it's what
`ipfs.add` will become once the async iterator migration is complete)
and we don't want to implement symmetrical `ipfs.catAsyncIterator`
etc methods, or at least not yet.