Output formatting

[ArtPoon]

Results should be displayed on the command line interface in a nice tabular format, and in addition written to a file in a standard format like CSV (JSON would be useful for more structured data, but that would be less accessible for users). Rows can correspond to breakpoints, grouped by method, so columns can be:

• method
• breakpoint location
• parental fragment on left
• parental fragment on right
• p-value (confidence)
• recombinant sequence identifier (in some cases) - this could mean multiple rows with the same breakpoint from identity by descent

[ArtPoon]

Implemented, needs re-testing after recent changes