By Marc Jones LONDON (Reuters) -Global financial messaging network SWIFT and more than 30 global banks announced on Monday they were now working "at pace" on making cross-border payments instantaneous and on a system capable of handling the various new forms of digital money. SWIFT, a key part of the world's financial architecture, said the institutions were collaborating on a blockchain-based "shared digital ledger" they see as vital for modernising international bank transactions. The timeline is yet ...