If a batch fails because of an unprepared statement, reprepare the statement and redo the batch.
Merge branch 'master' of github.com:ChannelMeter/gocql
Fix error with typo in assignment
Merge branch 'master' of github.com:ChannelMeter/gocql
Merge remote-tracking branch 'upstream/master'

Conflicts:
	conn.go
Merge remote-tracking branch 'upstream/master'
Check if flight or flight.info is not nil. Without this check a panic then subsequent deadlock can occur