Ml add more aggregate stats

[magneland]

This adds sub-totals for code and tests stats to the output.

[bleonard]

I missed this (for 3 years!)
Want to still merge this in?

@etagwerker seems to be using this. Want to test it out?

[etagwerker]

@magneland Would you be open to adding more tests for this new behavior?

I'm having a hard time understanding what it does (I'm new to this codebase and I'd like to help)

[magneland]

@magneland Would you be open to adding more tests for this new behavior?

I'm having a hard time understanding what it does (I'm new to this codebase and I'd like to help)

For reference here is the original railties implementation:
https://github.com/rails/rails/blob/55badbba3be76172a10519488c2a2747a0552728/railties/lib/rails/code_statistics.rb

So this codebase actually has zero tests, and I think that is actually OK because it's a command line tool that prints a bit of information about a Rails app.

If this is still useful I think it should be sufficient to just run this branch and master branch on various repos and diff the output.

[magneland]

This is the main change.
The output changes from:

| Total                | 64560 | 51668 |     685 |    4354 |   6 |     9 |

to:

| Code                 |   17640 |   13748 |     338 |    1557 |   4 |     6 |
| Tests                |   46920 |   37920 |     347 |    2797 |   8 |    11 |
| Total                |   64560 |   51668 |     685 |    4354 |   6 |     9 |

[etagwerker]

@magneland Cool, I just tested this in a sample application and it looks good. 👍

@bleonard I think this would be a good addition to the project.

[etagwerker]

@magneland Thanks for your contribution! @bleonard just gave me access to merge this. 😄