coordinates are in standard space, rather than voxels. Fixed the former,
but not the latter.

font colour/weight  changing on atlas state - no longer dependent
on region lists being generated; instead, the region filter is tested
against the atlas descriptions (all of which have been loaded).

instead of in layouts. BitmapComboBox  does not get disabled properly,
which is causing me headaches.

overlay volume widget is disabled for non-4D images.

OverlaySelectPanel anymore, so it has been deleted. ClusterPanel sets an
appropriate minimum size.

__init__.

the future, I will probably make this more configurable (giving the
ability to link volume display ranges).

CanvasSettingsPanel, which uses WidgetList to display/organise
its controls.

2. DisplayContext (and CanvasPanel) has a new property,
'syncOverlayDisplay`, which syncs/unsyncs Display/DisplayOpts properties
to/from the parent instances.

the VolumeOpts.cmap widget in overlay display panel.

a long time ago. Overlay order was not being preserved when overlays
were removed from the list.

overwriting the values of newly added overlay display properties.

methods. FSLViewPanel sets the wx window variant on control panels, but
it doesn't seem to have an effect.

values when performing recursive class hierarchy search.

to Opts instances when overlay type changes.

Updates to TypeDict to support returning the key value for all hits in a
class hierarchy search.

synced. About to add support for DisplayOpts properties.

not in the list. ColourBarPanel detects said error. I'm sure there will
be more instances of this that will crop up.

smarter w.r.t. resizing to fit the displayed message

Display instance.

2. Sprinkled some more debug statements about the place

3. fsl/__init__ configures root logger, instead of 'fsl' logger.

necessary. Actions.unbindAllWidgets checks for PyDeadObjects when
attempting to unbind.

called by their owning OrthoPanel/LightBoxPanels

FSLViewFrame when the associated ViewPanel is closed. Lots of fixes
still to be made.

two commits ago

and that the Frame instance clears refs to closed ViewPanel instances.

ViewPanels, not just CanvasPanels.

__copy__ operator.

2. DisplayContext prints memory log messages.

3. Memory logging honours noisy-module list (it wasn't before).

level.

instance for an overlay that has been removed from the overlay list

created when the overlay type is changed, the SC._draw method will
detect this and manually create a new GLObject.

because they were unable to set the GL context. But it seems that GL
stuff can be created without setting the context. May need to test on
other platform(s) to confirm this.