更新於2015年08月06日
v0.10.1 cancelling BodyBraille(our Talkback).
v0.9.1 refactering preferences. if long press, show text dialog and vibrate braille.
v0.9.0 support Talkback and Explore by touch mode.
v0.7.0 stereo sound vibration(2 points body braille) is supported.
v0.6.4 beep frequencies are selectable.
v0.6.3 Beep and vibration are synchronized.
v0.6.2 Beep vibration is supported.
v0.6.1 added some settings.
