Added all three dimensions to the getstring function
Working 3d version
Towards a more compact notation
Extra examples for testing
Revert "Towards a more compact notation"

This reverts commit 60901ea2028e06c43bc2fe90398f07e5bfef9de8.
Removed the maxDepth
Added coriolis example
Renamed Scalar to field
Introduced the Vector
First version with Fields, Vectors and Scalars
Cleanup