BUG: excessive download requests

[jklenzing]

Description

Addresses #172

When downloading numerous small files in close proximity to the data servers, sometimes the default code will return an excessive server request error. This adds a brief pause after each download to avoid erroring.

Type of change

• Bug fix (non-breaking change which fixes an issue)

How Has This Been Tested?

Running unit tests at locations where this issue arises.

Test Configuration

• Operating system: Monterrey
• Version number: python 3.10
• Physically near the servers

Checklist:

• [x] Make sure you are merging into the develop (not main) branch
• [x] My code follows the style guidelines of this project
• [x] I have performed a self-review of my own code
• [x] I have commented my code, particularly in hard-to-understand areas
• [x] I have made corresponding changes to the documentation
• [x] My changes generate no new warnings
• [x] I have added tests that prove my fix is effective or that my feature works
• [x] New and existing unit tests pass locally with my changes
• [x] Any dependent changes have been merged and published in downstream modules
• [x] Add a note to CHANGELOG.md, summarizing the changes
• [x] Update zenodo.json file for new code contributors

[jklenzing]

0.2 sec works for me on campus, 0.1 sec is too short.