Maya Plug-In - Add Command to Compile mmSolver Flags

[david-cattermole]

To get solver logic details from the maya.cmds.mmSolver command we should create a new plug-in command that is able to compile the mmSolver kwargs and give some useful feedback to the user, such as "errors verses parameters", or perhaps jacobian sparsity (does one attribute affect another).

This issue is needed for #72.

[david-cattermole]

Rather than creating a separate command to find this information, it is easier, faster and less maintaining if we add a flag to the existing maya.cmds.mmSolver command to allow early command bail out after computing the needed statistics, but before the actual solve starts.

This is currently being written and a simple version will be pushed to a branch in the next few days.

[david-cattermole]

This has been merged into the master branch in it's current state.

[david-cattermole]

A new option has been added to the flag 'printStatistics' named 'deviation'.
This will return per-frame details of the current deviation, without performing any solve or modifying the scene.

Added in commit 7ad6151.

[david-cattermole]

This is now done and merged into master branch.