- getQuote.IB is an alias for get_quote.IB (i.e. can be used with quantmod:::getQuote)
 - remove an unnecessary extra request for contract details

git-svn-id: svn://scm.r-forge.r-project.org/svnroot/twsinstrument/pkg/twsInstrument@390 edb9625f-4e0d-4859-8d74-9fd3b1da38cb