bounds for all axes.

for low/high value change callbacks, so updates were being dropped by
callqueue (which skips duplicate listener callbacks based on the
listener name).

that have been GC'd - using weakrefs).

names/objects used in closures were not being updated correctly

function which was being GC'd. HasProps.addGlobalListener updated
to accept weak parameter, and used by the former.

replace the entire list contents.

methods. The Clear method clears top level widgets and all groups.

value and/or attributes are bound.

subsequently being GC'd.

weakrefs. Debugging rubbish is in code, need to do more testing  before
putting into master branch.

dequeue an enqueued function. PropertyValue.removeListener takes
advantage of this feature.

could be GC'd during execution of this method - a ref to the parent
is now gained at the start of the method, so it cannot be GC'd until the
method returns.

default values, persisting current selection, etc. A few associated
additions to the EditableListBox interface. A little interactive test
case for choice property widget stuff.

method. addListener fixes to syncable and widgets_list

used. This is because if weakrefs are used for lambda/inner functions,
they will be GC'd immediately.

instances, PV context (which are always HasProps instances), and
callback functions. This is so that a HasProps instance can be gc'd
even if a PV/instance data object still holds a reference to it.

There may be some additional work required in the bindable/syncable
modules ..

wx.Windows.

buildDialog method optionally adds buttons to the dialog.

at bottom of group panels.

between widget groups.

that have a no-args constructor.

WidgetList allowing groups to be renamed.

of a group, and to programmatically collapse/expand group panels.

instance was pretty rudimentary, and not really necessary. Users are now
responsible for creating props widgets, then passing them in to the
WidgetList.

triggers enqueueing of list level listeners immediately. Previously,
list-level listeners were queued when the list-level post-notify
function was called (which could be at some arbitrary point in the
future).

lists were being newly bound.

were not being notified on choice update

activate editing (previously had to be on the StaticText
widget). Edit deactivation now works properly - TextCtrl was not being
destroyed when another item was clicked due to use of SetFocus instead
of SetFocusIgnoringChildren .