Merge pull request #34 from AdamWill/flask-jsonify-deprecated

Replace deprecated JSONIFY_PRETTYPRINT_REGULAR usage

httpbin/core.py

@@ -89,7 +89,7 @@ def jsonify(*args, **kwargs):
 
 app = Flask(__name__, template_folder=tmpl_dir)
 app.debug = bool(os.environ.get("DEBUG"))
-app.config["JSONIFY_PRETTYPRINT_REGULAR"] = True
+app.json.compact = False
 
 app.add_template_global("HTTPBIN_TRACKING" in os.environ, name="tracking_enabled")