GridMap 0.13.0

Fixes:

• Remove ETS-specific path cleaning code (#35)
• Module paths are now prepended to sys.path instead of appended (#26)
• Made JobMonitor more resilient to SMTP settings problems (#34)

Improvements:

• Improve exception handling when trying to send back job results.
• Heartbeats start before fetching input to prevent invalid crash detection
• Test against 3.4 instead of 3.3 on Travis
• Updated copyright notices to say 2014
• Add INFO-level logging messages about how jobs are running
• Switch to using importlib instead of using __import__
• Job name is no longer set using DRMAA native specification and instead uses JobTemplate.jobName.