v2.1.0

NOTE: Like with the last release, the best way to update this version is to reboot your device, update the app, open the app only after the update (not before), then you should be able to use it as normal. I would normally increment the major version due to this, but the last release wasn't even 12 hours ago so I'm basically counting this as part of it. It'll also hopefully be the last change requiring a reboot for a long time, since I'm making all these gadget improvements at once and I don't see a reason they should have to change for a while.

Changes (user-facing):

• HID functions can now be used WITH the standard Android USB features, no more needing to disable the standard USB features in order to use the app!
• Roughly 4x smaller APK file size
• Chinese Simplified Translation (thanks to @WeiguangTWK)

Changes (other):

• Bump commons-codec dependency to 1.16.1
• Enable minification and optimization without obfuscation (which is why, as mentioned above, the APK is much smaller)