22.7 Case Study: Matrices, Cont.

Create a template version of the Matrix class
Start with the class in chptr. 19
- Avoids explaining interactions between templates and nested classes
- No reason to make the exception classes into templates
Parameterize the element type only
Not the row and column bounds; simplifies overloading the arithmetic operators
Zero is no longer an appropriate value for all types; remove the initializer loop in the c'tor
Move member function definitions into the header file