Pyeo: Automated satellite imagery processing

Major updates

• Windows compatibility. A compatibility module replaces GetVirtualMemArray with an equivalent function. This is still under testing; please report any strange behavior in the issue tracker.
• Landsat downloading. Functions to query and download Landsat_8_C1 data from USGS are now in queries_and_downloads.
• API update. Pyeo has now been split into individual modules for querying and downloading, raster processing, filesystem manipulation and image classification. All functions that were in pyeo.core are now in one of these modules.

Minor updates

• Validation. A module for implementing Olofsson's validation method (https://dx.doi.org/10.1016/j.rse.2014.02.2015)
• Numerous small additions - see the documentation

Ongoing development

• Implementations of terrain and cloud correction algorithms for Landsat and Sentinel-2