Changes: - Key pool feature for safer wallet backup Gavin Andresen: - TEST network mode with switch -testnet - Option to use SSL for JSON-RPC connections on unix/osx - validateaddress RPC command eurekafag: - Russian translation
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More info about the key pool feature: http://www.bitcoin.org/smf/index.php?topic=1414.0 Now you only have to back up after every 100 sends, new addresses, generations, or transactions received by IP address.