refactor: use strict, permissive, unsafe as more generic terms for the IoPolicy configuration.

Signed-off-by: Caleb Hulbert <cmhulbert@gmail.com>

Author: cmhulbert

src/main/java/org/janelia/saalfeldlab/n5/FileSystemKeyValueAccess.java

@@ -62,11 +62,11 @@ private static IoPolicy getIoPolicy() {
 			return FsIoPolicy.atomicWithFallback;
 
 		switch (property) {
-			case "atomic":
+			case "strict":
 				return new FsIoPolicy.Atomic();
 			case "unsafe":
 				return new FsIoPolicy.Unsafe();
-			case "atomicFallbackUnsafe":
+			case "permissive":
 			default:
 				return FsIoPolicy.atomicWithFallback;
 		}