add failing test to illustrate terminate shell=True executors - refs #27
treat all processes as process groups - closes #27
Merge pull request #28 from fizyk/shell_terminate

treat all processes as groups - shell=True executors terminate with all it's subprocesses - refs #27
Update CHANGES.rst
#31 adds pre-check before starting TCP/HTTP executor
Merge pull request #32 from pwilczynskiclearcode/master

#31 adds pre-check before starting TCP/HTTP executor
"Release 0.2.0"
typo
Update CHANGES.rst
add pypy to tests