cleanup, better types

Author: jcs224

README.md

@@ -9,7 +9,7 @@ Supports flash messages - session data that is deleted after it's read.
 ## Usage
 
 ```ts
-import { Application, Router } from "https://deno.land/x/oak/mod.ts";
+import { Application, Router } from "jsr:@oak/oak@^12";
 import { Session } from "https://deno.land/x/oak_sessions/mod.ts";
 
 type AppState = {

deno.json

@@ -1,4 +1,7 @@
 {
+  "name": "@jcs224/oak-sessions",
+  "version": "4.1.12",
+  "exports": "./mod.ts",
   "tasks": {
     "typecheck": "deno check ./mod.ts"
   }

deno.lock

@@ -1 +1 @@
-export * from "https://deno.land/x/oak@v12.6.1/mod.ts"
+export * from "jsr:@oak/oak@^12"