terrautils/spatial.py: add EPSG parameter where appropriate, document EPSG assumption

[Chris-Schnaufer]

Tags: EPSG, Coordinate System, Spatial Reference

Description

There are several cases where EPSG:4326 is assumed and parameter values are not converted. In some cases, returned values are in EPSG:4326 but not documented introducing the possibility of creating problems

Details

By adding documentation and an EPSG parameter, introduced problems when working with non-EPSG:4326 coordinate systems can be minimized

Completion Criteria

• changes made as described under spatial.py of ticket drone-pipeline/Implement genomics pipeline #37 (see References below)

References:
https://app.zenhub.com/workspaces/ua-ag-data-science-5a57a3198339f11ba1c85775/issues/terraref/drone-pipeline/37
https://app.zenhub.com/workspaces/ua-ag-data-science-5a57a3198339f11ba1c85775/issues/terraref/drone-pipeline/55