appropriate extension

dictionary. Intead, they use 'file groups', which is conceptually much
easier to understand. New functions splitExt and getFileGroup.

Also added imcp and immv functions, which perform the equivalent of the
FSL imcp/immv scripts (but are more general).

readbuf size, despite profiling showing that it doesn't make much
difference.

when both q/sforms are unknown. Otherwise should default to
nibabel. Also added method to MelodicClassification to return all labels.

passed through to listener functions.

anymore, and might get deleted.

instanceified. Image.isNeurological is now memoized.

'intent' attribute.

because __taskThread attr does not exist.

optionally be told to calculate data ranges on a separate thread.

Bugfix in ImageWrapper.calcExpansion - could not handle slice outside of
coverage, but overlapping with some dimensions.

Initial support in Image class for data editing.

arg. When a Notifier listener is registered, it can be specified to run
on async.idle (to avoid threading issues).

As an aside, I have just realised that there is a naming collision
between Notifier.notify and HasProperties.notify, for anything which
sub-classes both. I don't think anything does, but this will probably
bite me in the future.

files. Log messages added to memoize functions.

initialisation. Image.name property turned into a regular (writeable)
attribute.

changes. Bugfix in Image.__getitem__ - was potentially returning data
with trailing dimensions of size 1.

future, but it's distracting me for the time being, so out it goes.

completely controlled by calling code.  The partial data range
calculation behaviour should be decided by FSLeyes (or whatever
is working with the Image object).

hopefully will handle writing too). Read sort of working. Major
disruptive changes to Image class. Things breaking bad.

things.