New issues with moving treeview IDs

[ragardner]

treeview mode .move() function warrants further testing

[ragardner]

Addressed with version 7.4.4 but testing will continue

[ragardner]

A further issue was identified and fixed, will close the issue for now but re-open if required.

7.4.5 has the following changes:

Changed:

• Functions which had mutable default arguments have been changed to either have:
  • no default argument where appropriate OR
  • None as the default and create an empty mutable if None

Fixed:

• #267
• Treeview mode: changed recursive functions to while functions to avoid recursion depth limit during tree traversal
• Additional treeview function move() fixes

Improved:

• Code for see() and arrow key functions