create an API library.
Move all non kernel classes into it.

The changes required to tidy up most of the memory leaks,
and other dodgy practices. 

implementation of algorithm Manager for iteration 2. added extra source code into project file. refs #33

Will require compilation as a shared library - macro added to add the required symbols ( __declspec(dllexport) ) to all class declarations for Windows.
Closes #32.

Now have an abstract object factory. The Algorithm and Workspace factories inherit from this. It contains the common implementation. Other changes are for compatability with this. Closes #32.

Updated doxyfile options. Now only outputs errors (not info messages) and all warning options set on. Also fixed all the warning messages it was giving to my code :) Re #31.