Per 1.1 spec JSON Feed will remain compatible

lib/Parser/JSON/Feed.php

@@ -50,8 +50,6 @@ class Feed implements \JKingWeb\Lax\Parser\Feed {
             throw new Exception("notJSON");
         } elseif (!isset($data->version) || !preg_match("<^https://jsonfeed\.org/version/(\d+(?:\.\d+)?)$>", $data->version, $match)) {
             throw new Exception("notJSONFeed");
-        } elseif (version_compare($match[1], "1", "<") || version_compare($match[1], "2", ">=")) {
-            throw new Exception("unsupportedJSONFeedVersion");
         }
         $this->data = $data;
         $this->version = $match[1];

tests/cases/JSON/failures.json

@@ -29,20 +29,5 @@
         "description": "Not a JSON feed 3",
         "input": {"version": "https://jsonfeed.org/version/"},
         "exception": "notJSONFeed"
-    },
-    {
-        "description": "Unknown version 1",
-        "input": {"version": "https://jsonfeed.org/version/2"},
-        "exception": "unsupportedJSONFeedVersion"
-    },
-    {
-        "description": "Unknown version 2",
-        "input": {"version": "https://jsonfeed.org/version/11"},
-        "exception": "unsupportedJSONFeedVersion"
-    },
-    {
-        "description": "Unknown version 3",
-        "input": {"version": "https://jsonfeed.org/version/0.1"},
-        "exception": "unsupportedJSONFeedVersion"
     }
 ]