78 typesafegetter (#81)

* Improve type safety and immutability

* Reorder functions

* Test immutability

* Improve type safety

* Updgrade deps

* Loosen phpgt dependency

* Loosen phpgt dependency

* Fix type safe getter

Author: Greg Bowler

composer.json

@@ -5,7 +5,7 @@
 
 	"require": {
 		"php": ">=8.0",
-		"phpgt/typesafegetter": "1.2.0",
+		"phpgt/typesafegetter": "1.*",
 		"magicalex/write-ini-file": "v1.2.4"
 	},
 	"require-dev": {