Describe the solution you'd like
Create a smart contract style guide to answer common questions / best practices.

Questions (we can add to this overtime):

• Use public variables or private w/ getter
• When to use events
• Accept arrays for batch transactions? Or always keep functions single purpose and use batch transactions instead.

Current setup (if I'm right) may end up in undesired situation if one uses a 
secure setup (I mean setup no one can abuse by rebooting to unprotected 
fastboot/recovery):
* phone is rooted (and BootUnlocker is installed)
* bootloader is locked
* stock recovery
* OTA update is proposed and accepted
=> oops!
* phone is not rooted anymore
* bootloader is locked
* stock recovery
=>
At that point o