added some empty example workflows that are copy-pasted from design/design.md
added mock workflow for the serial case
added .gitignore
added example data directories to .gitignore
added initial script and python modules
got a skeleton going for how code is organized
finding the configuration path
adding tasks to task_graph object
added jinja2 rendering
slight reworking of the interfaces
added fabric-like execution of tasks
measuring clock time during the execution of a task
fixed a bug with the timing