Rename _quiz_is_int() to quiz_valid_integer(), clean it up.
Rename __quiz_get_context_id() to quiz_get_id_from_url() with small improvement.
Fix quiz_valid_integer().
Use DBtNG in QuestionIO::getRequiredQuestions().
DBTNG in QuestionIO::getRandomQuestions().
Fix broken test cases.
Small cleanup in QuestionIO::buildCategoziedQuestionList().
Update QuestionIO to fetch question entities instead of nodes.
Validate 'question provider' in quiz_question_get_plugin_info().
Rename quiz_question_get_plugin() to quiz_question_get_provider().
Fix bad bug in quiz_question_get_plugin_info().
quiz_take_page() should have return keyword.
Move old code to ./quiz_question.remove.inc
Fix error in QuestionPlugin::saveRelationships().
Add Question.randomization
misc
Fix #106: Migrate question node types to question bundles.
Document for quiz_question_entity_load().
Default status for question entity is 1.
Remove legacy usage in QuestionPlugin::saveRelationships().