usize indexing only

examples/programs/distinct_types/main.bro

@@ -82,8 +82,8 @@ main func() i32 {
 	if bits != 255 { return 10 }
 
 	values [10]u8 := [0, 1, 2, 3, 4, 5, 6, 7, 8, 9]
-	if values[LocalID(4)] != 4 { return 11 }
-	section []u8 := values[LocalID(2)..LocalID(5)]
+	if values[usize(LocalID(4))] != 4 { return 11 }
+	section []u8 := values[usize(LocalID(2))..usize(LocalID(5))]
 	if section.len != 3 or section[usize(0)] != 2 or section[usize(2)] != 4 { return 12 }
 
 	if u32(id) != 7 or usize(id) != 7 or f64(id) != 7.0 { return 13 }

examples/programs/index_unsigned_error/main.bro

@@ -1,6 +1,6 @@
 main func() i32 {
 	items [3]mut i32 := undefined
-	i int := 1
+	i u32 := 1
 	items[i] = 42
 	return 0
 }

examples/programs/milestone_24/main.bro

@@ -52,7 +52,7 @@ main func() i32 {
 	items[0] = 10
 	items[1] = 20
 
-	idx u8 := 2
+	idx usize := 2
 	items[idx] = items[0] + items[1]
 	if (items[2] != 30) return 1