Implement steadily increasing `block.number`. This allows testing contracts that assume it is an increasing unique value.
Implement steadily increasing `block.number`.
This allows testing contracts that assume it is an increasing unique value.

ethereum/browser-solidity,soad003/browser-solidity,serapath-contribution/browser-solidity,serapath-contribution/browser-solidity,Yann-Liang/browser-solidity,ethereum/browser-solidity,Yann-Liang/browser-solidity,serapath-contribution/browser-solidity,soad003/browser-solidity,soad003/browser-solidity,Yann-Liang/browser-solidity