Use one declaration per statement

The old style of merging all of a function's variable declarations into
a single statement made some sense back in the days of var, but there's
no reason to keep doing it now that we use const and let.

spec/html/QueryStringSpec.js

@@ -2,13 +2,13 @@ describe('QueryString', function() {
   describe('#navigateWithNewParam', function() {
     it('sets the query string to include the given key/value pair', function() {
       const windowLocation = {
-          search: ''
-        },
-        queryString = new jasmineUnderTest.QueryString({
-          getWindowLocation: function() {
-            return windowLocation;
-          }
-        });
+        search: ''
+      };
+      const queryString = new jasmineUnderTest.QueryString({
+        getWindowLocation: function() {
+          return windowLocation;
+        }
+      });
 
       queryString.navigateWithNewParam('foo', 'bar baz');
 
@@ -17,13 +17,13 @@ describe('QueryString', function() {
 
     it('leaves existing params alone', function() {
       const windowLocation = {
-          search: '?foo=bar'
-        },
-        queryString = new jasmineUnderTest.QueryString({
-          getWindowLocation: function() {
-            return windowLocation;
-          }
-        });
+        search: '?foo=bar'
+      };
+      const queryString = new jasmineUnderTest.QueryString({
+        getWindowLocation: function() {
+          return windowLocation;
+        }
+      });
 
       queryString.navigateWithNewParam('baz', 'quux');
 
@@ -35,13 +35,13 @@ describe('QueryString', function() {
   describe('#fullStringWithNewParam', function() {
     it('gets the query string including the given key/value pair', function() {
       const windowLocation = {
-          search: '?foo=bar'
-        },
-        queryString = new jasmineUnderTest.QueryString({
-          getWindowLocation: function() {
-            return windowLocation;
-          }
-        });
+        search: '?foo=bar'
+      };
+      const queryString = new jasmineUnderTest.QueryString({
+        getWindowLocation: function() {
+          return windowLocation;
+        }
+      });
 
       const result = queryString.fullStringWithNewParam('baz', 'quux');
 
@@ -53,26 +53,26 @@ describe('QueryString', function() {
   describe('#getParam', function() {
     it('returns the value of the requested key', function() {
       const windowLocation = {
-          search: '?baz=quux%20corge'
-        },
-        queryString = new jasmineUnderTest.QueryString({
-          getWindowLocation: function() {
-            return windowLocation;
-          }
-        });
+        search: '?baz=quux%20corge'
+      };
+      const queryString = new jasmineUnderTest.QueryString({
+        getWindowLocation: function() {
+          return windowLocation;
+        }
+      });
 
       expect(queryString.getParam('baz')).toEqual('quux corge');
     });
 
     it('returns null if the key is not present', function() {
       const windowLocation = {
-          search: ''
-        },
-        queryString = new jasmineUnderTest.QueryString({
-          getWindowLocation: function() {
-            return windowLocation;
-          }
-        });
+        search: ''
+      };
+      const queryString = new jasmineUnderTest.QueryString({
+        getWindowLocation: function() {
+          return windowLocation;
+        }
+      });
 
       expect(queryString.getParam('baz')).toBeFalsy();
     });