Minor improvements.

app/models/feature.rb

@@ -72,8 +72,9 @@ class Feature < ApplicationRecord
     scope "#{browser}_no_data", -> { where("#{browser}": nil) }
 
     # This tries to find all cases where the version_added value is either
-    # version number or true.
-    # This code is bad, but it's also probably the best you're gonna get.
+    # version number or true, since the version_added can only be true, false,
+    # null, or a version number we can use a regex to elimate all but the
+    # version numbers.
     scope "#{browser}_true", -> {
       where("#{browser} ->> :key ~ :regex",
             key: "version_added",

public/data-test.json

@@ -14,7 +14,7 @@
     "bare_feature": {
       "__compat": {
         "support": {
-          "chrome": {
+          "firefox": {
             "version_added": "1"
           }
         }
@@ -65,6 +65,16 @@
         }
       }
     },
+    "feature_with_alternative_name": {
+      "__compat": {
+        "support": {
+          "firefox": {
+            "version_added": false,
+            "alternative_name": "feature_with_firefox_alternative_name"
+          }
+        }
+      }
+    },
     "standard_feature_with_description": {
       "__compat": {
         "description": "This will be 'Basic support' regardless",