modified:   bin/plato
new file:   src/plato/application.py
- Refactored bin/plato and moved most of the code into a PlatoApp
  class in src/plato/application.

modified:   src/plato/schedule/__init__.py
modified:   src/plato/schedule/local.py
modified:   src/plato/schedule/lsf.py
- added a new feature: plato jobs have now support for file attchments