Version 2.2.0
This release pays down tech debt:
- The Sundials library was updated to 3.1.0.
- The abandoned(?) Silo library was adopted and pruned to uSilo.
- Travis CI builds now use Docker containers.
- The overcomplicated migrator class has been deleted.
- There's a new low-level API for partitioning point sets and graphs.
- The functions for partitioning point clouds and polymeshes are now simpler.
- The PETSc and HYPRE solver interfaces are now more robust, and enabled for static builds.
- Numerous bugs were fixed.