V1.8.28:
removed odex patch and data edit to follow the policy
some fixes

V1.8.26:
java code support (click 'Java Code' in the editor)
updated android.jar, sign fix for Android 4.2, removed 'Make it as a plugin', etc.

V1.8.24:
fixed a critical system freeze issue
other minor improve
V1.8.22:
bugs fix
support a new patch rule
V1.8.20:
Can put apk building to background
UI improve and bugs fix