begin work on bed parsing
continue bed scanner
huh?
bed version detection
start refactor of liftover
begin centralizing of bed write code
fix parsing bugs
cleanup
add dupes option
fixy typo in writing interval lists
add reverse strand support for column iterator lift
framework for block merging
1st draft merge code
do liftover ocmmand line interface add skeleton for tests
add check for reverse strand on input
hack so that scannign works propery with piped input to stdin
add support for column iterator on reverse strand and use in liftover
Merge remote-tracking branch 'origin/development' into liftover
first draft of block liftover
big messy update.  mapped segments now sorted by target coordinate instead of source and all changes that entails.  also mapped segments now clipped on target coordinates so that they ever overlap exactly or not at all