show debug status on the pending symbol panel.
add the "Select" button the pinyin keyboard to select the second character of the text field.
Add the "Delete" button to the pinyin keyboard to delete two character around the cursor.
let pinyin IME use the mozKeyboard.commitText to send string to the text field.
make jspinyin support composing text.
add the "Show/Hide" button to the pinyin keyboard to toggle the visibility of the pending symbol panel.
focus could be switched between text field with jspinyin.
Fix jspinyin tests.
don't call the debug function when not in debug mode.
don't call the assert function when not in debug mode.
disable unused part of the searchUtility_compare function to improve performance.
Add "Hide" button to pinyin keyboard to hide the keyboard.
Clear composing text for pinyin if needed.
Don't show the selection range for jspinyin.
Set the return key label by the returnkeytype and returnkeylabel attributes of the text field.