tweak directory structure

index.ts

@@ -1,6 +0,0 @@
-export * from "./lib/delta_parser";
-export * from "./lib/delta_registry";
-export * from "./lib/delta";
-export * from "./lib/graph_state";
-export * from "./lib/types";
-export * from "./lib/version";

lib/index.ts

@@ -0,0 +1,6 @@
+export * from "./delta_parser";
+export * from "./delta_registry";
+export * from "./delta";
+export * from "./graph_state";
+export * from "./types";
+export * from "./version";

lib/util/index.ts

@@ -0,0 +1,4 @@
+export * from "./buffer_xor";
+export * from "./dfs";
+export * from "./permutations";
+export * from "./test_helpers";

package.json

@@ -1,8 +1,8 @@
 {
 	"name": "onion-core",
 	"sideEffects": false,
-	"main": "index.js",
-	"types": "index.d.ts",
+	"main": "lib/index.js",
+	"types": "lib/index.d.ts",
 	"dependencies": {
 		"buffer": "^6.0.3",
 		"crypto-browserify": "^3.12.0",