Summary of important user-visible changes for bim 1.1.2:
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 ** Fixed a bug in 1d upwind discretization.

 ** Added function to compute gradient of a 3d scalar field.

Summary of important user-visible changes for bim 1.1.1:
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 ** Added new functions to perform interpolation at arbitrary nodes.

Summary of important user-visible changes for bim 1.1.0:
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 ** Added new functions implementing the Orthogonal Subdomain Collocation 
    method in 3D.

 ** More functions for 3d problems were added.

 ** Demostrations of how to use the package are now in the wiki.




