Persist state every time form input changes

`react-localstorage` listens for the `beforeunload` event and saves `state` at
that point:
https://github.com/josephfrazier/react-localstorage/blob/830829c25cb13ea83d4d3dfc23ef3dbc200c438a/react-localstorage.js#L60

However, `beforeunload` seems not to fire when the PWA is swiped away:
https://stackoverflow.com/questions/49504561/app-swipe-away-handler-in-pwa

So, we have to save state manually as well.
Now that we're not keeping images/videos, this seems fast enough.

Fixes #6
See STRML/react-localstorage#17

src/routes/home/Home.js

@@ -314,9 +314,12 @@ class Home extends React.Component {
     const value = target.type === 'checkbox' ? target.checked : target.value;
     const { name } = target;
 
-    this.setState({
-      [name]: value,
-    });
+    this.setState(
+      {
+        [name]: value,
+      },
+      () => this.saveStateToLocalStorage(),
+    );
   };
 
   // adapted from https://www.bignerdranch.com/blog/dont-over-react/

yarn.lock

@@ -8243,7 +8243,7 @@ react-loadable@^5.4.0:
 
 "react-localstorage@https://github.com/josephfrazier/react-localstorage#higher-ordered-component":
   version "1.0.0"
-  resolved "https://github.com/josephfrazier/react-localstorage#830829c25cb13ea83d4d3dfc23ef3dbc200c438a"
+  resolved "https://github.com/josephfrazier/react-localstorage#075790da00749a514c801ce8b2458728b0c03716"
 
 react-social-icons@^2.8.1:
   version "2.8.1"