v0.6.2

Added

• Wallet — WalletClient#create_action now accepts UnlockingScriptTemplate objects (e.g. P2PKH) as input unlocking scripts, enabling template-based signing without BEEF.
• Wallet — wire_source_from_storage fallback populates source data from wallet storage when BEEF is absent or incomplete.
• Wallet — finalize_action resolves template inputs via sign_all before serialisation.
• Storage — MemoryStore#filter_outputs supports outpoint filtering.