giscoR 0.4.0

• gisco_get_nuts(): Add an additional geo column (identical to NUTS_ID)
  for enhanced compatibility with eurostat package (#62).
• Adjust examples for CRAN.
• Add dependency httr.

What's Changed

• Add geo column to output on NUTS by @dieghernan in #64
• Bump actions/checkout from 3 to 4 by @dependabot in #68
• Examples and fix on errors online based in httr by @dieghernan in #70

Full Changelog: v0.3.5...v0.4.0