Upcoming release

[fdetsch]

Prepare for release:

• curl::curl_download() in parallel
• Run code from Gitbook
• Test downloadGimms,missing-method with missing x | y input
• Bypass poles server connection timeout
• Check specified version in updateInventory()
• NASANEX file download
• Test pkg with win-builder R-release and R-devel

Backlog:

• Establish Gitbook access
• Revise Gitbook
• {raster} to {terra} transition #7