v0.8.0

CurvilinearGrids v0.8.0

Diff since v0.7.7

• Add new grid types with optimized storage:

1. RectilinearGrid2D, RectilinearGrid3D - optimized grid defined by x, y, and z coordinate vectors
2. UniformGrid2D, UniformGrid3D - optimized grid for uniformity

Breaking changes

• Removal of convenience constructors like rectlinear_grid due to the new optimized types and expanded constructors. Just use the type constructors instead now,

Merged pull requests:

• RectlinearArrays module (#31) (@ajrohr2)