Remove module export aliases

BREAKING CHANGE: After exporting a js and css export alias, I realized that export aliases are really stupid.
Files are now exposed consistently across cjs and module mode by referencing file paths only. Sorry for the version thrash.

README.md

@@ -58,12 +58,14 @@ If your bundler implements package.json `exports` resolution, you can explicitly
 
 ```css
 /* esbuild css */
-@import 'mine.css/css';
+@import 'mine.css/dist/mine.css';
 ```
 
 ```js
 /* esbuild js */
-import { toggleTheme } from 'mine.css/js';
+import { toggleTheme } from 'mine.css/dist/theme-switcher.js';
+/* or */
+import { toggleTheme } from 'mine.css';
 ```
 
 ## Usage

package.json

@@ -43,12 +43,14 @@
   "type": "module",
   "main": "dist/theme-switcher.js",
   "module": "dist/theme-switcher.js",
+  "style": "dist/mine.css",
   "exports": {
-    ".": "./dist/theme-switcher.js",
-    "./js": "./dist/theme-switcher.js",
-    "./css": "./dist/mine.css"
+    ".": {
+      "default":  "./dist/theme-switcher.js"
+    },
+    "./dist/theme-switcher.js": "./dist/theme-switcher.js",
+    "./dist/mine.css": "./dist/mine.css"
   },
-  "style": "dist/mine.css",
   "repository": {
     "type": "git",
     "url": "https://github.com/bcomnes/mine.css.git"