chore(bitswap) tidy up bitswap, ledger#38

Merged

btc merged 6 commits intomasterfrom feat/bitswap-import-cleanup

Sep 11, 2014

+85-30

Commits on Sep 11, 2014

organize imports
Brian Tiger Chow
committed
privatize getLedger method
Brian Tiger Chow
committed
substitute with LedgerMap type
Brian Tiger Chow
committed
hide ledger wantlist manipulation
Brian Tiger Chow
committed
privatize fields in ledger
Brian Tiger Chow
committed
fix(bitswap:ledger) race conditions
Brian Tiger Chow
committed