btcd v0.3.3-alpha

• Significantly improve initial block chain download speed
  (#20)
• Add a new checkpoint at block height 267300
• Optimize most recently used inventory handling
  (#21)
• Optimize duplicate transaction input check
  (btcsuite/btcchain#2)
• Optimize transaction hashing
  (#25)
• Rework and optimize wallet listener notifications
  (#22)
• Optimize serialization and deserialization
  (#27)
• Add support for minimum transaction fee to memory pool acceptance
  (#29)
• Improve leveldb database performance by removing explicit GC call
• Fix an issue where Ctrl+C was not always finishing orderly database
  shutdown
• Fix an issue in the script handling for OP_CHECKSIG
• Impose max limits on all variable length protocol entries to prevent
  abuse from malicious peers
• Enforce DER signatures for transactions allowed into the memory pool
• Separate the debug profile http server from the RPC server
• Rework of the RPC code to improve performance and make the code cleaner
• The getrawtransaction RPC call now properly checks the memory pool
  before consulting the db (#26)
• Add support for the following RPC calls: getpeerinfo, getconnectedcount,
  addnode, verifychain
  (#13)
  (#17)
• Implement rescan websocket extension to allow wallet rescans
• Use correct paths for application data storage for all supported
  operating systems (#30)
• Add a default redirect to the http profiling page when accessing the
  http profile server
• Add a new --cpuprofile option which can be used to generate CPU
  profiling data on platforms that support it
• Several other minor performance optimizations
• Other minor bug fixes and general code cleanup

btcd v0.3.2-alpha

• Add a 32-bit MSI for Windows
• Fix an issue that could cause the download of the block chain to stall (#12)
• Remove deprecated sqlite as an available database backend
• Close sqlite compile issue as sqlite has now been removed (#11)
• Change default RPC ports to 8334 (mainnet) and 18334 (testnet)
• Continue cleanup and work on implementing RPC API calls
• Add support for the following RPC calls: getrawmempool, getbestblockhash, decoderawtransaction, getdifficulty, getconnectioncount, getpeerinfo, and addnode
• Improve the btcctl utility that is used to issue JSON-RPC commands
• Fix an issue preventing btcd from cleanly shutting down with the RPC stop command
• Add a number of database interface tests to ensure backends implement the expected interface
• Expose some additional information from btcscript to be used for identifying "standard" transactions
• Add support for plan9 - thanks @mischief (#19)
• Other minor bug fixes and general code cleanup

btcd v0.3.1-alpha

• Change default database to leveldb
  NOTE: This does mean you will have to redownload the block chain. Since we are still in alpha, we didn't feel writing a converter was worth the time as it would take away from more important issues at this stage
  
  
• Add a warning if there are multiple block chain databases of different types
• Fix issue with unexpected EOF in leveldb -- #18
• Fix issue preventing block 21066 on testnet -- btcsuite/btcchain#1
• Fix issue preventing block 96464 on testnet -- btcsuite/btcscript#1
• Optimize transaction lookups
• Correct a few cases of list removal that could result in improper cleanup of no longer needed orphans
• Add functionality to increase ulimits on non-Windows platforms
• Add support for mempool command which allows remote peers to query the transaction memory pool via the bitcoin protocol
• Clean up logging a bit
• Add a flag to disable checkpoints for developers
• Add a lot of useful debug logging such as message summaries
• Other minor bug fixes and general code cleanup

btcd v0.3.0-alpha

• Initial Public Preview