fix last line being omitted
add columns option
fix quoting
add csv-spectrum tests
0.5.1 important fix
Merge branch 'bugifx'

* bugifx:
  0.5.1 important fix
gitattributes for crlf file
update readable stream
call callback correctly
test flowing and non flowing mode
call cb after flushing the data
Merge branch 'bugifx'

* bugifx:
  call cb after flushing the data
  test flowing and non flowing mode
  call callback correctly
  update readable stream
  gitattributes for crlf file
comply to csv-spectrum tests