rename none to null

std/enums/enums.hon

@@ -12,7 +12,7 @@ EnumMap func($E, $V type) type {
 
 init func(
 	$E, $V type,
-	values meta.EnumFieldStruct(E, ?V, some!(none)),
+	values meta.EnumFieldStruct(E, ?V, some!(null)),
 ) EnumMap(E, V) {
 	map EnumMap(E, V) = undefined
 
@@ -37,7 +37,7 @@ get func($E, $V type, map @EnumMap(E, V), key E) ?V {
 		.enum |info|: expand for info.fields |field, i| {
 			if key == field!(E, field.name) {
 				if (map.present[i]) return map.values[i]
-				return none
+				return null
 			}
 		}
 		else: compile_error!("EnumMap key must be an enum")

std/enums/enums.test.hon

@@ -21,5 +21,5 @@ handles_sparse_enum_get test {
 	eof :: get(&names, TestEnum.eof)
 
 	try testing.expect_type(?[]u8, eof)
-	try testing.expect_equal(none, eof)
+	try testing.expect_equal(null, eof)
 }