Fix issue with executor dying due to urllib.urlopen() failure
Add shutdown by timeout in scheduler
Pad task ID with zeros and add type identifier
RENDLER implementation in C++.
Ignore files that were not created.
Graceful shutdown with SIGINT handler.
Extract task suffix to constants
Add bounded retry for failed tasks
Update statistics and rename for clarity
Exit framework when nothing to do
Switch to task attempts from retries for clarity
Add optional parameter that puts a horizon on render jobs
Move python rendler into own subdirectory
Update README
Update skeleton for python Rendler
Golang version finds updated python executor correctly
Scala version finds updated python executor correctly
Implement graceful shutdown in golang rendler
Merge pull request #4 from karya0/cpp

RENDLER implementation in C++.
Merge pull request #3 from mesosphere/alex-bugfixing

Alex bugfixing