Ultra Clear (UCR) 3.0.1.0 Mandatory update

Dear Ultraclear (UCR) friends,

This new version of the wallet is mandatory until block #1075000, and includes the followings improvements:

• introduces new rewards table and increase on the stake reward percentage to 35%;
• bumps protocol version;
• skips block signatures for blocks older than the last checkpoint;
• skips proof of stake checks for blocks older than the last checkpoint;
• skips transaction checks for blocks older than the last checkpoint;
• adds new checkpoints;
• adds UPGRADE_MASTERNODE_RANK_V2;