LuckChain version 2.0.1.8 03.28 released

The changes are as follows:

1, Add some checkpoints,
2, Fixed blockchain sync rules,
3, Reduced launch game needs to be invest tokens (Mandatory update, at block 760000),
4, Add API to support phone call.
Source code: https://github.com/LuckBash/Bash
Please update ASAP, thanks.