Allow cli-table to determine optimal column width

[fyockm]

• To prevent truncation, column width specification are removed. This allows cli-table to determine the best width based on header and data for the column. Files are still truncated at 50 chars.
• Updated external package numbers in package.json and prepend caret. See article here.
• Clean up some indentation anomalies.

[fyockm]

👍 thanks

@kangax this should fix your truncation issue, and scale for projects with 10,000+ lines of code. I tested with 1000000, and the coverage table still displayed legibly.

[kangax]

thanks!