Minor improvements

What's Changed

• Add wrap for SimpleToken by @leirn in #5
• add related navaids to airports by @leirn in #7
• Add index by @leirn in #8
• add filter by @leirn in #9
• Implement usage of page parameter by @leirn in #10

New Contributors

• @leirn made their first contribution in #5

Full Changelog: v0.1.3...v0.1.4