Updated nbpublisher submodule reference
IPython extension now executes .topographicarc
Updated nbpublisher and dataviews submodule references
TransferFnWithRandomState now supports time-dependent random state
Added a favicon for the topographica.org website
Updated param, imagen and docbuilder submodule references
Converted testEnumerationParameter doctests to unit tests in param/tests
Updated Tutorials/index.rst to point to updated, tested notebooks
Fixed rst parse errors for long_description.

There were some missing links.
Fixed typo in long_description.
Weight initialization with time-dependent=True

Initialization of different random weights from a single imagen.pattern
instance where time_dependent=True. Without this fix, all CFs would be
initialized with identical weights. This approach allows independent
weight generation, making parallelism possible (via multiprocessing).
Added convenience function time_dependent to topo/__init__.py
Updated som_retinotopy.ty to use the topo.time_dependent helper function
Weight generation falls back to uncontrolled style when necessary
Modified som_retinotopy.ty so that it passes existing training tests

These changes should be reverted and an appropriate name given to the
UniformRandom Imagen pattern to make som retinotopy time-dependent
throughout. This will require updating the training test data.
Added CFStack to Plot.defaults so it can be saved by PlotSaver
Added CFProjection.hash_format parameter to control CF weights
Renamed controlled_weight_generation to independent_weight_generation
Added the destination sheet name to the hash_format string
Fixed numpy imports and removed references to oldnumeric

Two remaining references to oldnumeric are both imports of
'random_array' (sheet/slissom and tests.unit.testplot). One such import
exists in the random module of ImaGen.