* aws-creds: default to a 30-second request timeout

No (infinite) timeout is a bad default.

* aws-creds: return the previous timeout when overriding

The value is global, so it's not always possible to restore a previous
setting value, but it's better than nothing.

* Simplify instance detection

* Add ap-east-1 region (#235)

Co-authored-by: Juraj Sadel <juraj.sadel@espressif.com>

* Fix crates.io badge, update links and various formatting (#219)

* Make all fail-on-err variations run the same check (#233)

* Make attohttpc optional for credentials (#231)

* Make attohttpc optional for credentials

* Enabling tls implies enabling http

* Use async write for tokio,async-std (#230)

* Fix tokio async doctest

* Add support for the older ListObjects API (#229)

Google Cloud Storage doesn't support the newer ListObjectsV2 call.

* If file is smaller than one chunk, don't initiate multi-part upload (#228)

There already was a special case in put_object_stream() for a small files,
where the multi-part upload was aborted if the input turned out to be
small enough to fit in one chunk. But we can do better than that, and not
initiate the multi-part upload in the first place, avoiding two round
trips to S3 (one to initiate, and another to abort the multi-part upload).

While we're at it, refactor the loop slightly.

* Fix blocking tests

* Make minidom dependency optional (#226)

* Fix a typo

* Make minidom dependency optional

* Import futures-io crate directly instead of through futures (#227)

* Revert "Import futures-io crate directly instead of through futures (#227)"

This reverts commit 7b2e3a00

.

* Stream is flaky with rustls-tls

* Implements #223

* s3/bucket: default to 30-second request timeout (#221)

No (infinite) timeout is a bad default.

* aws-creds 0.27.0

* aws-region 0.23.3

* Import futures-* crates directly instead of through futures (#237)

* 0.28.0

* No *s

Co-authored-by: Paul Khuong <pkhuong@backtrace.io>
Co-authored-by: Drazen Urch <durch@users.noreply.guthub.com>
Co-authored-by: JurajSadel <43887390+JurajSadel@users.noreply.github.com>
Co-authored-by: Juraj Sadel <juraj.sadel@espressif.com>
Co-authored-by: Alex Touchet <alextouchet@outlook.com>
Co-authored-by: Riley <asonix@asonix.dog>
Co-authored-by: Heikki Linnakangas <heikki.linnakangas@iki.fi>
Co-authored-by: Jonas Platte <jplatte@users.noreply.github.com>