Raise on errors of createorder calls
Remove duplicate data store (market_maps) in cryptsy
Rename cryptsy _convert_timestamp to _convert_datetime as it does not
convert timestamps
Remove obsolete Decimal casts
Add transaction class and methods
Add some get methods to cryptsy, they do need some additional output
formatting
fix check for market_id (is Decimal now)
Merge pull request #2 from jayme-github/transactions

Transactions, some further methods and fixes