Python iterative support, consistent API and stable for Jobs up to 20GiB

Still highly experimental release.

• The scheduler is not preemptive which means that there is only one job a the time.
• Memory exhaustion will occur if you are not careful with the configuration file.
• Python API and C++ iterative API is provided

First unstable release of VeloxMR

List of features of this release:

• Regular MapReduce workflow.
• Iterative MapReduce workflow.
• DFS and MR API for C++.
• MR API for Python.

Note that it is very unstable release, there are several bugs on this release.

First feature implement

It supports regular mapreduce workflow