Change unlock_new return type from String to Zeroizing<String> so the generated mnemonic phrase is zeroized on drop and does not linger in freed heap memory. Resolves drift item #8 / review W7.
Change unlock_new return type from String to Zeroizing<String> so the generated mnemonic phrase is zeroized on drop and does not linger in freed heap memory. Resolves drift item #8 / review W7.