Hook in handler for property rules
Update tests to handle PropertyRuleHandler
Move factory functionality into PropertyManager
Include header so delete works correctly
Use test framework for PropertyManager unit test
Add method to install property factory
Add a method to query factories
Test PropertyFactory a bit more thoroughly
Add method for duplicating factories
Implement basic property rule handling
Ensure install fails if a property already exists
Add a function for Atlas type definitions
Use map insert instead of operator[]
Fail cleanly if a type exists

The code would segfault if installing a new entity class failed at the last
stage in Inheritance. Inheritance would return null, which would be assigned
to the factory's m_type. addProperties() assumes the pointer is not null.
This fix adds a check, and reports a failure undoing the whole process.
Update test factories to have a type

It is completely reasonable to require that a fectory has a pointer
to a TypeNode, so these tests always set one up now. Upgrade to using the
framework while we're doing it.
Add asserts to check entity factories have types
Fix a number of errors in Fishing script
Add a test for the fishing task
Rename "float" class to "bobber"

This frees up "float" for the fundamental data type in the Atlas tree.
Add some items to be done soon