Now have a mechanism for caching wrapped symbolic functions.
Improved the docs and temporarily broke dependence on IVP class.
Addeda method for computing actual investment.
Improved the docstrings.
Added a method for computing the effective depreciation.
Added author info to docstring.
Improved the docstrings for solow model.
Added an effective depreciation rate attribute.
Added a class method for plotting intensive form of aggregate production.
Improved the documentation of the params attribute.
Added class method for intensive investment, added some helper functions for computing steady states.
Got rid of unnecessary import statement.
Added a method for computing k_dot, and updated docs.
Added a class method for plotting the phase diagram.
Fixed some docstrings.