Initial child_process work
Fix subprocess.jsm library, add some tests
Add shell fixtures, tests passing, more node-parity
Add child event tests for spawning
Add options for timeout, maxBuffer
Progress
Expose pid in subprocess, make reading of pipes async
Progress
stdin working
Add bat files for Windows
Add fixes for Windows
Progress
Fix new dynamic script testing
Merge pull request #1 from jsantell/implement-child_process

Implement child process