Merge development branch as alpha release

See merge request p7k/Oersted!7

Remove fixed size Eigen::Vector3d and Eigen::Vector4d from tests due to possible SSE alignment issues on Titan

Fixed CMakeLists.txt previously using MPI_C_LIBRARIES to link against MPI_CXX_LIBRARIES

Add optional arguments to build.sh

Add eos.sh to prepare default environment for compiling on Eos

Exploring ways to change targeted save directories during compilation to ease building on local machine and OLCF resources

Switch to STATIC libraries for building on Eos

Partition of swarm::mpi_run() into multiple functions for clarity

Improvements to newton raphson convergence checking which improves computation time

Changes IntegralAverage post processor to Integral with an optional switch to calculate the average

Begin test implementations of functions for torque-speed and power-speed mapping of synchronous reluctance example

Being test implementation of functions for particle swarm optimization

Cleanup some template methods

Start a Geometry library for generic computational geometry methods

Fixed some issues with meshing by adjust delaunay optimality test and reverted back to old Mesh::insert_internal_boundaries(); implementation

This may have been related to the delaunay optimality condition for triangles near the don't-care condition. There was a negative tolerance allowing sub-optimal elements to appear in the mesh which violated some assumptions and led to mesh divergence issues

Fixes for C++14 compatibility
Adds header files in Matrix project that were missing from previous commits

TODO: Mesh creation fails with non-convex domains

    Torque calculation from body forces is complicated by discontinuities in field gradients across material boundaries

Fix for Mesh::insert_internal_boundaries with small airgaps
    This method is probably not 100% fixed, but it is more stable than before (SalientPoleSynchrel regression tests run with CylindricalAirgap<2>)

Initial implementation of CylindricalAirgap class which automates creation of multiple annuli between two radii

Problems with discontinuous material boundaries have fields which suffer from jump discontinuities
This means the divergence of the Maxwell stress tensor is impulsive at material interfaces
Evaluating net force/torque using body forces requires both volumetric and surface integrals in these cases
This is a nontrivial excercise

In the meantime, the next step will be to add a special calculation method for cylindrical airgaps

Implements SpatialForcing which allows, e.g., spatially varying current densities defined by lambda functions (e.g. sinusoids)
Implements tests for SpatialForcing using sinusoidal functions in test_Square and test_Circle
Begins implementation of tests on two circular annuli (test_Annuli)

Mesh::mesh_data() now returns a MeshData object containing a vector of Triangles instead of nested vectors
Added SquareOrder2 tests of second order triangular elements

Reorganize some code into separate shared libraries

Store FiniteElementMesh DiscreteRegions in std::map with Contour as key

Changes the way number of elements and unknowns are calculated in Physics
    This still needs some work
Adds FunctionArgument class for passing arguments to Forcing objects with multiple parameters
Adds test demonstrating parallelism using OpenMP

FiniteElementMesh remains templated to facilitate storage of variable order elements

This eliminates all Boost library dependencies