5.3.4
Fixed a bug in multiple choice questions where there is only one correct choice.
Added option "skip_intro_page:[true|false]".
Fixed to not freeze when the number of questions in a section is more than the actual number of questions
Added the option "ignore_zenhan". Full-size and half-size characters are scored as the same.
Fix correct answer display for fill-in-plus
Fixed a bug in which explanations were not displayed when there was only one pull-down in pull-down style questions
Support for 10th and subsequent pulldowns in pull-down style questions
Adjusted fill-in-the-blank and pull-down questions so that {1} and others in formulas are not treated as placeholders
