• Implemented Master nodes
• Change of hashing algorithm from Cryptonight Variant 2 to Cryptonight Conceal
• Number of Bug fixes and improvements from Monero upstream
• Add new SwarmID selection algorithm
• Implement Swarm assignment Logic
• Fix incorrect calculation of blacklisted outputs
• Wallet performance fixes
• Change early_blocks behaviour
• Avoid V1 transactions when using sweep_all
• Return correct errors for register transactions
• Refactor check_tx_inputs to eliminate dead branches
• Implement relaxed contribution rules
• Add less granular sync options to RPC
• Add --log-level for unit tests
• Modify core tests for TX validation
• Make fixes to offline signing
• Fee Fixes for bulletproof txes