Pump to 0.0.2 (#101)

• Add on_proc_property_computed hook
• Add plugin options for pipen construct
• Keep args, envs, scheduler_opts and plugin_opts as Diot object for procs
• Fix shebang not working in script
• Make sure job rendering data are stringified.
• Move starts as a method so that pipelines can be initialized before processes.
• Use plyrda instead of siuba for channel
• Add template rendering error to indicate where the rendering error happens;
• Add succeeded to on_complete hook;
• Add hook on_proc_start;
• Add argument succedded for hook on_proc_done;
• Realign pipeline and proc names in progress bars
• Remove debug log in job preparing, which will appear on the top of the logs