AgileBits is calling its newest version of 1Password ($9) its biggest update ever — an apt time for it, considering the catastrophic Heartbleed bug. The password manager and secure wallet app has been rebuilt for speed and productivity in version 4.5. 1Password now supports multiple vaults and sharing from the Mac or Windows versions of 1Password. Multiple Dropbox accounts are also now supported. The app’s browser has been improved, with easier…