Mark some stdlib proposals as implemented (#2937)

* Mark some stdlib proposals as implemented

* Mark SE-0477 as implemented

* Don’t mark SE-0473 as implemented

Author: glessard

proposals/0459-enumerated-collection.md

@@ -3,7 +3,7 @@
 * Proposal: [SE-0459](0459-enumerated-collection.md)
 * Author: [Alejandro Alonso](https://github.com/Azoy)
 * Review Manager: [Ben Cohen](https://github.com/airspeedswift)
-* Status: **Accepted**
+* Status: **Implemented (Swift 6.2)**
 * Implementation: [swiftlang/swift#78092](https://github.com/swiftlang/swift/pull/78092)
 * Previous Proposal: [SE-0312](0312-indexed-and-enumerated-zip-collections.md)
 * Review: ([pitch](https://forums.swift.org/t/pitch-add-collection-conformance-for-enumeratedsequence/76680)) ([review](https://forums.swift.org/t/se-0459-add-collection-conformances-for-enumerated/77509)) ([acceptance](https://forums.swift.org/t/accepted-with-modification-se-0459-add-collection-conformances-for-enumerated/78082))

proposals/0477-default-interpolation-values.md

@@ -3,7 +3,7 @@
 * Proposal: [SE-0477](0477-default-interpolation-values.md)
 * Authors: [Nate Cook](https://github.com/natecook1000)
 * Review Manager: [Xiaodi Wu](https://github.com/xwu)
-* Status: **Accepted with modifications**
+* Status: **Implemented (Swift 6.2)**
 * Implementation: [swiftlang/swift#80547](https://github.com/swiftlang/swift/pull/80547)
 * Review: ([pitch](https://forums.swift.org/t/pitch-default-values-for-string-interpolations/69381)) ([review](https://forums.swift.org/t/se-0477-default-value-in-string-interpolations/79302)) ([acceptance](https://forums.swift.org/t/accepted-with-modification-se-0477-default-value-in-string-interpolations/79609))
 

proposals/0485-outputspan.md

@@ -3,7 +3,7 @@
 * Proposal: [SE-0485](0485-outputspan.md)
 * Author: [Guillaume Lessard](https://github.com/glessard)
 * Review Manager: [Doug Gregor](https://github.com/DougGregor)
-* Status: **Accepted**
+* Status: **Implemented (Swift 6.2)** ([Extensions to standard library types](#extensions) pending)
 * Roadmap: [BufferView Roadmap](https://forums.swift.org/t/66211)
 * Implementation: [swiftlang/swift#81637](https://github.com/swiftlang/swift/pull/81637)
 * Review: [Pitch](https://forums.swift.org/t/pitch-outputspan/79473), [Review](https://forums.swift.org/t/se-0485-outputspan-delegate-initialization-of-contiguous-memory/80032), [Acceptance](https://forums.swift.org/t/accepted-with-modifications-se-0485-outputspan-delegate-initialization-of-contiguous-memory/80435)

proposals/0488-extracting.md

@@ -3,7 +3,7 @@
 * Proposal: [SE-0488](0488-extracting.md)
 * Author: [Guillaume Lessard](https://github.com/glessard)
 * Review Manager: [Tony Allevato](https://github.com/allevato)
-* Status: **Accepted**
+* Status: **Implemented (Swift 6.2)**
 * Implementation: underscored `_extracting()` members of `Span` and `RawSpan`, pending elsewhere.
 * Review: ([pitch](https://forums.swift.org/t/pitch-apply-the-extracting-slicing-pattern-to-span-and-rawspan/80322)) ([review](https://forums.swift.org/t/se-0488-apply-the-extracting-slicing-pattern-more-widely/80854)) ([acceptance](https://forums.swift.org/t/accepted-se-0488-apply-the-extracting-slicing-pattern-more-widely/81235))