Computation Job Management 0.6

Computation Job Management (jobman in short) is a program that calls executables according to a given program flow. Each executable is run in a separate process. It is useful when a project needs to carry out a series of calculations that are performed by software written in different languages or supplied by third parties, but invoking individual programs manually is error prone and hard to manage.
The various individual programs dont communicate with each other except via persistent storage. This is especially the case for some scientific computing, quantitative finance, and prototyped programming.
Enhancements:
- A job can output a status string indicating to skip other sibling jobs.
- Fixed a number of bugs.
- Mark the program in beta status as it has been used to manage jobs completed in days.