Release 0.20

Changes

• Don't enforce daemon owning pool wallet if payment-processing is disabled
• Persistence configuration is optional if payment-processing is disabled and the pool is in relay-mode
• Share relay config
• Dummy persistence
• Bitcoin ZMQ block notify topic is now configurable
• Share relay connect option
• BTCP explorer links
• ZCash & BTCP PowLimit configuration
• Block effort calc
• Fix BTCP hashrate hack
• Blockinfo API results
• Increase write throuput of share db inserts
• Monero double transfer RPC failure response handling

Database Migration

ALTER TABLE shares ADD source TEXT NULL;
ALTER TABLE blocks ADD source TEXT NULL;
ALTER TABLE blocks ADD hash TEXT NULL;
ALTER TABLE poolstats ADD sharespersecond DOUBLE PRECISION NOT NULL DEFAULT 0;