README: update gzip size and phrasing, bump to v0.3.0

Author: rob2d

README.md

@@ -12,8 +12,8 @@ npm install -D use-viewport-sizes
 ```
 
 ## Benefits ##
-- extremely lightweight and dependency-free -- **3.75kb** without/before gzipping.
-- only one `window.onresize` handler used to subscribe to any changes in an unlimited number of components as well despite several different paradigms that pull from this.
+- extremely lightweight and zero dependencies -- adds **1.6kb** after gzip.
+- only one `window.onresize` handler used to subscribe to any changes in an unlimited number of components no matter the use-cases.
 - optional debounce to delay updates until user stops dragging their window for a moment; this can make expensive components with size-dependent calculations run much faster and your app feel smoother.
 - debouncing does not create new handlers or waste re-renders in your component; the results are also pooled from only one resize result.
 - optional hash function to update component subtree only at points you would like to.

package.json

@@ -1,6 +1,6 @@
 {
   "name": "use-viewport-sizes",
-  "version": "0.3.0-beta.1",
+  "version": "0.3.0",
   "description": "a tiny React hook which allows you to track visible window viewport size in your components w/ an optional debounce or custom memo function for updates for optimal rendering.",
   "main": "./build/index.js",
   "types": "./build/index.d.ts",