Show kun readings on a new line.

On the mailing list, <a href="https://groups.google.com/d/topic/tagaini-jisho/dpbdG7njvZQ/discussion">it was requested</a> that entries, when printed, give more room to the readings. The current behavior is that kun and on readings are placed on a single line, with exactly half a line allotted for each. I've changed it so that kun and on readings are printed on separate lines.