-- write a better XSL stylesheet? I am not an XSL expert.
-- evaluate the use of the <ttl/> RSS element.
+- re-evaluate the use of trigger_error() or use a custom error handler,
+ because right now the code exists as soon as trigger_error() gets called and
+ any following code is ignored.
+
+- write better XSL stylesheets? I am not an XSL expert
+- evaluate the use of the <ttl/> RSS element
+- show cards directly in RSS items for twitter.com
+- show direct links for videos in the Instagram feed
+- check the encoding of the tweets when UTF is used,
+ maybe solvable with mb_convert_encoding()?
+ See http://php.net/manual/en/domdocument.loadhtml.php
+
+- The dependencies on the symphony components in composer.json could be more
+ relaxed like ">=2.7.0", but for now sticking to "2.7.*" is good enough.