Improved registry listing by using iterator

Iterator added to registry

Clarified control_any_noreg.py by adding a MIHO005 example

Renamed a lot of the control_ demos, due to device agnostic behaviour

Removed control_both.py, as control_any.py will do any sockets now

control_mihome.py recoded to use remembered registry

control_legacy.py simplified, assuming learning done by setup_tool.py

setup_tool tested in simulation and works OK

setup_tool finished, ready for testing

setup_tool now written, ready to start testing

About half of the setup tool is written and roughly working

Design for all setup_tool actions done

setup_tool main menu written and working

Defined requirements for demo apps including setup tool menu

Specified the demos that we want to write as part of the device classes testing

Receive counter implemented and tested

Devices_test is now a unittest

All registry tests now pass. ...

Requirements list reviewed.
TODO list updated for next steps

Most of Registry_test completed. ...

Just need to write code that passes the 'rx routes created' test

KVS all test cases pass

KVS.DEL() passing tests

Factory creation in ADD is now working

kvs remove functionality working

KVS.remove() test now passes

KVS tested in non persisted mode and works. ...

KVS mostly tested in persisted mode, but more code to write and test

KVS tests for non persistent KVS all pass

Test harness and functionality for KVS defined

Moved KVS to separate module with separate test harness. ...

Will test this in isolation first before integrating with Registry

Managed to persist device configuration to registry.kvs

Beginnings of a persistent version of a class is appearing