fix, twsapi's original IB version doesn't have a micro version
correct some hardcoded data farms (for FUT)
fix, close whatIf orders on OpenOrder callback.

This got broken since recent mm changes, see 2b087deb
remove unused enum MKT_DATA_REQUEST

It was added in 8987af6c but never used.
update ChangeLog for 0.4.0
update README download URLs
fix to fix, correct typo of 2f8d6ff2