add indices to optimize mysql queries
cache h24 volume in ticker
Fix spelling on id_document_params method

Fix spelling for better readibility
Merge pull request #151 from jyek/id-documents-fix

Fix spelling on id_document_params method
allow order param in trades api
validate order_by param, add doc
fix stale object hanlding in account
Refactor assets of bank deposit
Merge branch 'master' into getxrp