Release v2.8.4

Bugfix release

• compatibility with gevent 1.5

Release v2.8.1

This is a bugfix release to ensure compatibility with recent versions of gevent.

• [#101] compatibility with gevent >= 1.2
• add lookup_pipeline to exported functions
• fix tests (thanks @LocutusOfBorg, @xnox)

Release 2.8

Warning: requires gevent < 1.2

• Ctrl-C will kill drmaa jobs, SIGUSR1 will suspend jobs and SIGUSR2
  will resume.
• [#99] use gevent semaphores
• [#87] run everything through autopep8
• [#86] use pytest for testing

Release 2.7

• Compatibility with python 3.7 (thanks @jbarlow83 )
• add gevent as pool_manager, add pool_manager option
• Fix typo in sys.hexversion comparison (thanks @jwilk)

Release 2.6.3

Mainly bug fixes for 2.6

• Transform with the new output_dir parameter now works works even when the output contains more than one file

  @transform(..., suffix("xxx"), output_dir = "/new/output/path") 

• Subdivide also takes the new output_dir parameter

  @subdivide( ..., suffix("xxx"), output_dir = "/new/output/path")

  works in exactly the same way as

  @transform(..., outputdir="xxx")

• ruffus.drmaa_wrapper.run_job() works with python3.
  Fixed issue with byte and text streams

• ruffus.drmaa.wrapper.run_job() allows ``env` (environment) to be set for jobs with are run locally as well as those on the cluster

• New object-orientated style syntax works seamlessly with Ruffus command line support ruffus.cmdline.run