Zenodo integration

The purpose of this release is to trigger generation of a new DOI on Zenodo, which will make MMSP citable.

Testable Examples

New minor version of MMSP, due to feature updates in example codes.

• Examples rewritten for common layout, structure, and "best practices" in place.
• Automated compile and parallel execution on Travis-CI to catch glaring build and runtime errors.
• New example code for Cahn-Hilliard equation with red-black Gauss-Seidel solver (semi-implicit).
• Tagged significant commits with semantic versioning, vX.Y.Z:
  • Z: bugfix
  • Y: feature release
  • X: major version, breaks API (or changes license)