scipipe/scipipe: v0.6.1: New RunToRegex() method. Various smaller fixes and improvements.

This is a smaller release, following up to the 0.6 release where we removed all external dependencies.

• New wf.RunToRegex("process_name_pattern.*"). See 2d231ff74532659aa3d3c9d3d5759834c2b192c2

• Add start/stop time stamps to audit log (081576c21ecc13c49ba1b051c5780418b40390fe)
• Ensure directories are created for outputs also in custom components (ea2b56d24c6c0d9a6b358a1b5cbee72790ddd33a)
• Fail completely on existing .tmp file, for clearer behavior and error messages (57ddb33b836a3f09a9f839073e26b34163745a62)
• Add process names in audit logs (not just commands) (7f8db5c573a8f815f75b64eb87ae5b7c2e7714bc)