Simplification, improving test coverage

This release focuses on refine function names, simplification
and easy of testing for Windows 10 reployments.

Build Notes:

• golang v1.14
• Caltech library go packages
  • storage v0.1.0
  • namaste v0.0.5
  • pairtree v0.0.4
• OS used to compiled and test
  • macOS Catalina
  • Windows 10
  • Ubuntu 18.04 LTS
• Python 3.8 (from Miniconda 3)
• zip has replaced tar in the releases of libdataset

Renamed functions:

• collection_status() is now collection_exists()

Depreciated functions and features:

• S3, Google Cloud Storage support dropped.
• grid(), if you need this create a frame first and use frame_grid().

Some tests fail on Windows 10 for libdataset. These will be addressed in future releases.