Initialize dry nodes to inf in binary models.
Remove duplicate code in propagation.mako.
Only render "WithSwap" kernels when using the AA access pattern.
Precompute the inverse of the relaxation time in the binary fluid
models.
Disable FMAD for access_pattern tests.
Add LinearlyInterpolatedTimeSeries -- a new time-dependent scalar data
source.
Add the vis_mixin module.
Make it possible for mixins to have their own after_step functions.
Use visualization in channel flow.

Also add the visualizer script.
Add support for authentication tokens in the visaulizer.
Add UI to set fields.
Add setuptools config.
Only import the execnet module when it's actually needed.
Make execnet an optional dependency.
Update the duct_flow test case with code implementing the analytical solution.
Fix the initial velocity profile in the channel flow example.
Update the geometry of the channel flow.
Add sanity checks and make it easy to switch BC in the channel flow
example.
Update installation docs.

Updates:
 - Ubuntu installation instructions
 - list of required dependencies

Adds:
 - generic installation instructions for Linux
Fix typos in the duct flow example.