FIP-6/7/10/12 support and circulating supply calculations
New Features:
- Implements FIP-6, FIP-7, (completes) FIP-10, and FIP-12.
- Adds ability to calculate locked tokens for genesis locks, FIP6 locks, and BP reward locks.
- Adds ability to calculate full circulating supply.
Misc:
- adds examples for indexing blocks
- extends transaction timeout to 3 minutes
- disabled failing tests for transferring addresses
Bug fixes:
- API mutex was getting passed by value, updated fio.API to embed eos.API as a pointer.
- SetFee tests were using wrong key