various small changes to bitcore
Merge pull request #14 from maraoz/misc

various small changes to bitcore
make transactions calculate their hash on parse
Merge pull request #15 from maraoz/feature/tx-hash-on-parse

make transactions calculate their hash on parse
Transaction: add fromObj() method, for importing textual JSON representation
Merge pull request #16 from jgarzik/tx-fromobj

Transaction: add fromObj() method
fix logger variable name
remove duplicate require
call callback on connection error
Merge pull request #17 from matiu/bug/callback-on-rpc-error

Bug/callback on rpc error