Specify Spatial or Space-Time Parameters over Non-Square Domains

[pulsipher]

Currently, spatial and space-time parameters are defined as independent parameters with independent infinite domains (which means they are combined via Cartesian products). Ideally, we would like to define domains of arbitrary shape (e.g., a sphere). We can kind of accomplish this using dependent parameters, but the transcription is not completely implemented (see #56) and we currently disallow infinite variables to be defined using only a subset of a dependent parameter set. This connects to PDE theory involving non-square domains which I am admittedly not well acquainted with.