Landsat and USGS imagery?

Just wondering if in the course of development of this (very awesome) package, if the possibility of interfacing with Landsat had been considered? Not pushing this for a feature request, just wanted to know from people who are more familiar with the landscape/obstacles. I haven't kept up with U.S. map offerings in the recent years but doing a search now yields some promising leads:

The [most promising service seems to be AWS's Landsat S3](https://aws.amazon.com/public-data-sets/landsat/):

> Landsat 8 data is available for anyone to use via Amazon S3. All Landsat 8 scenes from 2015 are available along with a selection of cloud-free scenes from 2013 and 2014. All new Landsat 8 scenes are made available each day, often within hours of production.

[A CLI from Development Seed: Power tools for Satellite Imagery](https://developmentseed.org/blog/2014/08/29/landsat-util/)

> Over the past few months we’ve built tools to automate our own work with satellite imagery. It once took us all day to collect, georeference, composite, color correct, and pan-sharpen imagery. Now, we can do it in a matter of minutes. We’ve packaged our processing scripts into a command line utility. Landsat-util makes it easier for other developers and organizations to work with open satellite imagery.

[USGS: The following examples demonstrate usage of The National Map services in other APIs.](http://viewer.nationalmap.gov/example/)

[GIS Stackexchange: Site to download al USGS Topo Maps in bulk](http://gis.stackexchange.com/questions/8977/site-to-download-al-usgs-topo-maps-in-bulk/8988#8988) - a couple of interesting suggestions and options.

ProPublica's SimpleTiles library, which may have some useful guidance: https://propublica.github.io/simple-tiles/

No repository file, test, or entry point is named, and the issue asks about feasibility rather than defining a change. Start by reviewing the AWS Landsat S3, USGS National Map, landsat-util, and SimpleTiles links; work is not ready until the integration scope and acceptance criteria are decided.

Written by the indexing model from the issue text.