Dsc

Updates in this version:

- Issue 94 revisited.
- [minor] Fix syntax incompatibility with earlier versions of `msgpack`.
- [minor] Fix a bug of not updating meta-database when `-s existing` is used.

This version implements a preliminary support to module specific container environment (docker and singularity for now), as briefly documented in:

https://stephenslab.github.io/dsc-wiki/advanced_course/DSC_Docker.htmluse-container-options-in-dsc-script-to-share-your-dsc

This release improves error handling and logging behavior. Command option `-e` was added to completely ignore errors and proceed to the end. Errors such as walltime or memory beyond limit on cluster are also tracked, in addition to job script return code status.

- Issue 194
- Issue 202
- [minor] 209, 196

**A file signature clean up is required after this upgrade.**

This version improves the cluster job handling by utilizing MPI based multi-node computing (a mini virtual cluster so to speak). An option `nodes_per_job` was added to the cluster configuration template -- when, for example, `nodes_per_job: 10` is set, the number of submitted job should be 10 times less than before due to internal parallelization across nodes. This mechanism makes the large benchmark execution behavior much more friendly on clusters because this will submit much less PBS jobs to execute benchmarks.

- Issues 179, 182, 183.
- SoS bumped to version 0.19.11 for additional improvements in cluster job submission.

- Issue 171 is partially improved.