…o maintain previous import syntax.

…file and into their own files.

Moved all error classes to the spatialpy error file.  Added missing model component error.  Switch model errors to component errors in all component files.

…action.__init__ to insure that args are of the correct type.

… diffusion_coefficient. Added unit test for Reaction.__str__.

Natural Convection Example

Model and Domain str function

Auto sizing for result plotting

Cleaned up result plotting functions

…ipt and yml file for integration tests.

Split Tests

small doc update

Update Staging for Final 1.0