Fixing URL state changer to not blow away extra params.

index.html

@@ -47,15 +47,14 @@
         https://openfootball.github.io/questions.html
 
         <h5>TODO</h5>
-        fix setState to not remove everything
         1974 two germanies?
-        embiggen current event flag
-        add sort metric below team name
         update ribbon hover
         // STRANGE EXTENDED TIME CHILE-BRAZIL (when? not 1930) - FIX BY HAND? IS BECAUE se1 IS SCORE __GOING INTO__ EXTENDED TIME
-        better layout
+
+        better layout: embiggen current event flag
         better colors
         webpack 2 / css modules?
+
         tweet it!
     </div>
 </body>

js/main.js

@@ -111,14 +111,19 @@ const main = {
     },
 
     setState: (next) => {
-        const prev = main.getState();
+        const state = main.getState();
         const url = window.location.href.split('?')[0];
 
-        const eventKey = next.eventKey || prev.eventKey;
-        const rounds = next.rounds || prev.rounds;
-        const sort = next.sort || prev.sort || null;
+        state.eventKey = next.eventKey || state.eventKey;
+        state.rounds = next.rounds || state.rounds;
+        state.sort = next.sort || state.sort || null;
+
+        const params = [];
+        for (key in state) {
+            params.push(`${key}=${state[key]}`);
+        }
 
-        history.pushState(null, null, `${url}?eventKey=${eventKey}&sort=${sort}&rounds=${rounds}`);
+        history.pushState(null, null, `${url}?${params.join('&')}`);
     },
 }