[DOCS] Add npm badge to README.
Use LRU cache API to prevent multiple transaction events for the same transaction
Merge branch 'develop' of https://github.com/ripple/ripple-lib into develop
[BUG] Don't set canonical flag when remote signing.
Check remote exists in transaction.complete
Fix transaction finalize
Fix transaction constructor
Recognize account option as equivalent to source in transaction construction
Cleanup
Add limit option to requestBookOffers