Merge pull request #30 from VFLashM/master

namedtuple/recordtype rows corner-cases fixes, indexing support
fixed typo bitarray1
Merge branch 'master' of github.com:denisenkom/pytds
updated readme
updated docs
switch to setuptools
moved code from pytds.dbapi to pytds
updated readme
updated readme
better code example:
bugfix, provide separate flag for closed state, without it connection could get into incorrect state if _open method fail in a middle
fixed windows testing
automatic versioning
documented isolation level
Merge branch 'master' of github.com:denisenkom/pytds
more gitignore
set_isolation_level method converted to property setter
failover support in progress
finished retry algorithm

algorithm details are in
http://msdn.microsoft.com/en-us/library/ms175484.aspx
Failover support fixes

1. Remember active server between requests
2. Retry with other server if database is not accessible on current
active server