MyListView: scroll/overscroll callbacks
MyActivity: improvements in chargning/loading detections
Executor: fixed UIThread execution
MyListView: charges (up and down) and overscrolls (top and bottom)
MyListView: uncharges and detects bottom
RunnableHelper SerializeHelper
FileHelper
Security: Base64Helper ComplexCrypt HashHelper SimpleCrypt
Gradle: build system main/debug/release sources