[3.1.5] Support unlimited number of swipe card quiz

Support unlimited number of swipe card quiz.

• Due to performance issues, the number of swipe card problems was limited to 500, but the limit has been removed at the request of many people!

• You can use swipe card without limit if you increase the number to the maximum in the settings before starting the quiz.

Add multiple choice time limit option.

• At the request of Yura Kim, a time limit option has been added to the multiple choice quiz.

• If you turn on the Time limit option in the settings before starting the quiz, an option to set the Time per Question appears.

• After the allotted time, the problem being solved is considered incorrect and the correct answer is shown.

Add an option to capitalize the first letter of the memo screen.

• An option to automatically change the first letter to uppercase has been added to the memo screen (word addition screen).

• If you turn on the uppercase option, All first letters will be changed to uppercase.

• You can find this option in Edit Settings on the memo screen.