Update GitHub Workflows to use support Xcode 16.4 (#138)

* Update GitHub Workflows to use support Xcode 16.4

* Fix benchmarks target

Support Swift Syntax 6.1 (#127)

* add 601 to the test matrix

* Use SS 601

* Adjust top-level declaration spacing when using SwiftSyntax601

* Update tests.yml

* Update Package.resolved

Update logic to improve variableIdentifiers generated for strings con…

…taining accronyms (#116)

Implements static string extension. Resolves #113 (#114)

Tool - Support Swift 6 language mode (Strict Concurrency) (#112)

* Add @retroactive to surpress warnings from SE-0364

* Extract logging into Logger type instead of using global variables and methods

* Add Sendable conformance to StringCatalog types

* wip

* Update XCStringsToolTests to support Swift 6 language mode

* wip

* Revert support back to Swift 5.9 tools

* reenable BareSlashRegexLiterals

* Enable StrictConcurrency experimental feature

* Move Regex back into a static helper

* Fix use of StrictConcurrency

* Enable Swift 6 language mode via swiftLanguageVersions

* Stop using bare slash regex literals

Bump version to 1.0.0

Bump version to 0.5.2

Compile snapshots using Swift 6 Language Mode (#101)

* Compile snapshots using Swift 6 language mode

* Annotate LocalizedStringResource.Localizable struct as Sendable

Add deprecation warnings to generated `LocalizedStringResource` API (#93

)

* Emit warnings when using deprecated API

* Stop using deprecated API in PluginTests

Bump version to 0.4.2