Version 4.7.0

New features:

• Private messages: you can send and receive messages, view your inbox and get push notification on new message
• [android] Ability to move the app to the SD card
• Option to show piece symbol in moves list

Fixes/improvements:

• Fix standalone stage clock
• Improve local evaluation speed when possible by a factor of 2 or 4 (based on device number of CPU cores)
• Improve local evaluation: depth, nodes per second