Changes in version 0.2.2                        

Bug Fixes

  - Critical fix: Restored explicit data() calls to fix reverse
    dependency compatibility
      - Functions called via :: from other packages were failing with
        "object 'airports' not found"
      - Affected the 'footprint' package on CRAN
      - All exported functions now explicitly load the airports dataset

                        Changes in version 0.2.1                        

Bug Fixes

  - Fixed invalid URLs for CRAN submission
      - Updated ODbL license URL (301 redirect fix)
      - Updated OpenFlights data URL (404 fix)

                        Changes in version 0.2.0                        

Major Improvements

  - Modernized CI/CD infrastructure - replaced Travis CI with GitHub
    Actions
  - Significantly expanded test coverage (3 tests → 59 tests)
  - Updated airport data from OpenFlights (as of 2025-11-09)
  - Increased minimum R version requirement to R >= 4.0.0
  - Updated roxygen2 to 7.3.2

Code Quality

  - Refactored repetitive code patterns into helper functions
  - Removed redundant data() calls throughout codebase
  - Extracted magic numbers into named constants for clarity
  - Improved error handling and input validation
  - Added comprehensive input validation for coordinate functions

Infrastructure

  - Added GitHub Actions workflows for R-CMD-check, test coverage, and
    pkgdown deployment
  - Moved data preparation script to standard data-raw/ directory
  - Updated package documentation to modern roxygen2 standards
  - Fixed author role in DESCRIPTION (added "aut")
  - Updated README with new CI badges

                        Changes in version 0.1.4                        

  - Added more new airports
  - Added a pkgdown documentation website

                 Changes in version 0.1.3 (2019-10-09)                  

  - Added a NEWS.md file to track changes to the package.
  - Added 514 new airports including 78 in the United States, 61 in
    China, 37 in Australia, and 34 in Greenland of all places.
  - Added ability to limit airport lookups by any ISO country code in
    addition to country name. Thanks to @danim25 for the suggestion.