fixed warning
changed layer thickness information for mesh layer mapping from array to vector
Made MatrixBase a base class of (dense) matrix.
Merge pull request #111 from TomFischer/MathLibDenseMatrixInheritanceStructure

Made MatrixBase a base class of (dense) matrix MathLib::Matrix.
Test PointVec with empty input.
Test PointVec constructor with single point input.
Test PointVec with nullptr input.
Test PointVec with two diff input points.
Allocate vector of points instead of using reference.
Split two points test in DiffPoints and EqualPoints tests.
Test PointVec push_back() operator.
In PointVec tests move up common code.
In PointVec test add random points generator.
New maxNormDist() for points. Correct comparisons for eps=0.
Rewrite uniqueInsert() using iterators and STL.
Test PointVec with random input and large epsilon.
Rename test to reflect its contents.