Sync (#815)

* Sync docs and metadata (#771)

* Bump actions/checkout from 4.1.7 to 4.2.0 (#772)

Bumps [actions/checkout](https://github.com/actions/checkout) from 4.1.7 to 4.2.0.
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](actions/checkout@692973e...d632683)

---
updated-dependencies:
- dependency-name: actions/checkout
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

* Fix avogadro constant (#777)

* Update about.md (#778)

* Update about.md

Fix word-choice error.

* Also make fixes in concept:numbers:introduction.md and exercises:freelancer-rates:introduction.md

* Fix `NESButtons` typo (#779)

* Fix `NESButtons` typo

Just a little typo in the enum name.

* fix other mentions of `NESButtons`

* Bump actions/checkout from 4.2.0 to 4.2.2 (#775)

Bumps [actions/checkout](https://github.com/actions/checkout) from 4.2.0 to 4.2.2.
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](actions/checkout@d632683...11bd719)

---
updated-dependencies:
- dependency-name: actions/checkout
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

* [New Exercise]: Armstrong Numbers (#708)

* Add Armstrong Numbers exercise

* Add author

* [Armstrong number]: Fix formatting (#783)

* Fix formatting

* Fix

* [New Exercise]: Darts (#707)

* Add Darts exercise

* Add author

* Fix

* Sync exercise to problem spec

* Update CI configuration and add Swift Numerics dependency (#806)

* Update CI configuration and add Swift Numerics dependency

* Check if swift6 is available in macos 15

* Remove obsolete LinuxMain.swift and XCTestManifests.swift files from various exercises (#812)

* Remove redundant test cases from MagicianInTrainingTests (#814)

---------

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: András B Nagy <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Mike Shaver <[email protected]>

exercises/concept/magician-in-training/Tests/MagicianInTrainingTests/MagicianInTrainingTests.swift

@@ -112,24 +112,4 @@ final class MagicianInTrainingTests: XCTestCase {
     let stack = [7, 3, 7, 1, 5, 5, 3, 9, 9]
     XCTAssertEqual(evenCardCount(stack), 0)
   }
-
-  static var allTests = [
-    ("testGetCard", testGetCard),
-    ("testSetCard", testSetCard),
-    ("testSetCardIndexTooLow", testSetCardIndexTooLow),
-    ("testSetCardIndexTooHigh", testSetCardIndexTooHigh),
-    ("testInsertAtTop", testInsertAtTop),
-    ("testRemoveCard", testRemoveCard),
-    ("testRemoveCardIndexTooLow", testRemoveCardIndexTooLow),
-    ("testRemoveCardIndexTooHigh", testRemoveCardIndexTooHigh),
-    ("testRemoveTopCard", testRemoveTopCard),
-    ("testRemoveTopCardFromEmptyStack", testRemoveTopCardFromEmptyStack),
-    ("testInsertAtBottom", testInsertAtBottom),
-    ("testRemoveBottomCard", testRemoveBottomCard),
-    ("testRemoveBottomCardFromEmptyStack", testRemoveBottomCardFromEmptyStack),
-    ("testCheckSizeTrue", testCheckSizeTrue),
-    ("testCheckSizeFalse", testCheckSizeFalse),
-    ("testEvenCardCount", testEvenCardCount),
-    ("testEvenCardCountZero", testEvenCardCountZero),
-  ]
 }