TODO

Each of the following categories lists goals in an order which roughly
corresponds to the order in which they are hoped to be added.
Items are marked using the following code:
  [x] ~ planned to be finished before the next release (0.83)
  [o] ~ hopefully started in the near future
  [-] ~ marked for eventual development

[o] Standardize on documenting via :cpp:class:: rather than :cpp:type::
[o] Add documentation for BlockDistMatrix
[o] Finish documenting DistMatrix 
    (including a detailed {Dist,Redundant,Cross}Comm discussion)
[o] Update documentation for special matrices and imported routines
[o] Add documentation for pivot metadata caching
[-] Document possibility of changing Int from int
[-] More documentation for detailed interfaces which reside in sub-namespaces