v11

Security upgrade

This is a major security release, which is mandatory for everyone.

1. Security issues fixes: 78; 77; 76; 76; 75; 74; 73; 72; 70; 69; 68; 66; 65; 64.
2. Migration to grid2d_v3a algorithm from the block N 740500
3. Difficulty adjustment (divided by 1000000)
4. poscanAtomicSwap - Atomic swap trait for assets